// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "android_webview/browser/aw_content_browser_client.h"

#include <cstddef>
#include <memory>
#include <optional>
#include <string>
#include <string_view>
#include <utility>
#include <vector>

#include "android_webview/browser/aw_browser_context.h"
#include "android_webview/browser/aw_browser_context_store.h"
#include "android_webview/browser/aw_browser_main_parts.h"
#include "android_webview/browser/aw_browser_process.h"
#include "android_webview/browser/aw_client_hints_controller_delegate.h"
#include "android_webview/browser/aw_contents.h"
#include "android_webview/browser/aw_contents_client_bridge.h"
#include "android_webview/browser/aw_contents_io_thread_client.h"
#include "android_webview/browser/aw_contents_statics.h"
#include "android_webview/browser/aw_cookie_access_policy.h"
#include "android_webview/browser/aw_devtools_manager_delegate.h"
#include "android_webview/browser/aw_feature_list_creator.h"
#include "android_webview/browser/aw_http_auth_handler.h"
#include "android_webview/browser/aw_origin_matched_header.h"
#include "android_webview/browser/aw_policy_blocklist_service_factory.h"
#include "android_webview/browser/aw_settings.h"
#include "android_webview/browser/aw_speech_recognition_manager_delegate.h"
#include "android_webview/browser/aw_web_contents_delegate.h"
#include "android_webview/browser/aw_web_contents_view_delegate.h"
#include "android_webview/browser/cookie_manager.h"
#include "android_webview/browser/network_service/aw_browser_context_io_thread_handle.h"
#include "android_webview/browser/network_service/aw_proxy_config_monitor.h"
#include "android_webview/browser/network_service/aw_proxying_restricted_cookie_manager.h"
#include "android_webview/browser/network_service/aw_proxying_url_loader_factory.h"
#include "android_webview/browser/network_service/aw_url_loader_throttle.h"
#include "android_webview/browser/network_service/net_helpers.h"
#include "android_webview/browser/prefetch/aw_prefetch_service_delegate.h"
#include "android_webview/browser/safe_browsing/aw_safe_browsing_navigation_throttle.h"
#include "android_webview/browser/safe_browsing/aw_url_checker_delegate_impl.h"
#include "android_webview/browser/supervised_user/aw_supervised_user_throttle.h"
#include "android_webview/browser/supervised_user/aw_supervised_user_url_classifier.h"
#include "android_webview/browser/tracing/aw_tracing_delegate.h"
#include "android_webview/common/aw_content_client.h"
#include "android_webview/common/aw_descriptors.h"
#include "android_webview/common/aw_features.h"
#include "android_webview/common/aw_paths.h"
#include "android_webview/common/aw_switches.h"
#include "android_webview/common/url_constants.h"
#include "base/android/locale_utils.h"
#include "base/android/yield_to_looper_checker.h"
#include "base/base_paths_android.h"
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/containers/contains.h"
#include "base/feature_list.h"
#include "base/files/scoped_file.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/ptr_util.h"
#include "base/memory/scoped_refptr.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/notreached.h"
#include "base/path_service.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "components/crash/content/browser/crash_handler_host_linux.h"
#include "components/embedder_support/origin_trials/origin_trials_settings_storage.h"
#include "components/embedder_support/switches.h"
#include "components/embedder_support/user_agent_utils.h"
#include "components/navigation_interception/intercept_navigation_delegate.h"
#include "components/page_load_metrics/browser/metrics_navigation_throttle.h"
#include "components/page_load_metrics/browser/metrics_web_contents_observer.h"
#include "components/policy/content/policy_blocklist_navigation_throttle.h"
#include "components/policy/content/safe_search_service.h"
#include "components/policy/core/browser/browser_policy_connector_base.h"
#include "components/prefs/pref_service.h"
#include "components/safe_browsing/content/browser/async_check_tracker.h"
#include "components/safe_browsing/content/browser/browser_url_loader_throttle.h"
#include "components/safe_browsing/content/browser/mojo_safe_browsing_impl.h"
#include "components/safe_browsing/core/common/features.h"
#include "components/safe_browsing/core/common/hashprefix_realtime/hash_realtime_utils.h"
#include "components/url_matcher/url_matcher.h"
#include "components/url_matcher/url_util.h"
#include "components/user_prefs/user_prefs.h"
#include "components/version_info/version_info.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/client_certificate_delegate.h"
#include "content/public/browser/file_url_loader.h"
#include "content/public/browser/frame_type.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/navigation_throttle.h"
#include "content/public/browser/navigation_throttle_registry.h"
#include "content/public/browser/network_service_instance.h"
#include "content/public/browser/prefetch_service_delegate.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/shared_cors_origin_access_list.h"
#include "content/public/browser/site_isolation_policy.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_delegate.h"
#include "content/public/common/content_descriptors.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/url_constants.h"
#include "mojo/public/cpp/bindings/pending_associated_receiver.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "net/android/network_library.h"
#include "net/cookies/cookie_setting_override.h"
#include "net/cookies/site_for_cookies.h"
#include "net/http/http_util.h"
#include "net/net_buildflags.h"
#include "net/ssl/ssl_cert_request_info.h"
#include "net/ssl/ssl_info.h"
#include "services/cert_verifier/public/mojom/cert_verifier_service_factory.mojom.h"
#include "services/metrics/public/cpp/ukm_source_id.h"
#include "services/network/network_service.h"
#include "services/network/public/cpp/features.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/url_loader_factory_builder.h"
#include "services/network/public/mojom/cookie_manager.mojom-forward.h"
#include "services/network/public/mojom/fetch_api.mojom.h"
#include "services/network/public/mojom/network_context.mojom.h"
#include "services/service_manager/public/cpp/binder_registry.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_registry.h"
#include "third_party/blink/public/common/loader/url_loader_throttle.h"
#include "third_party/blink/public/common/navigation/preloading_headers.h"
#include "third_party/blink/public/common/web_preferences/web_preferences.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/resource/resource_bundle_android.h"
#include "ui/display/util/display_util.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/resources/grit/ui_resources.h"

using base::android::YieldToLooperChecker;
using content::BrowserThread;
using content::FrameType;
using content::WebContents;
using safe_browsing::AsyncCheckTracker;
using safe_browsing::hash_realtime_utils::HashRealTimeSelection;
using AttributionReportingOsRegistrar =
    content::ContentBrowserClient::AttributionReportingOsRegistrar;

namespace android_webview {

AwContentBrowserClient::AfterStartupTask::AfterStartupTask() = default;
AwContentBrowserClient::AfterStartupTask::~AfterStartupTask() = default;
AwContentBrowserClient::AfterStartupTask::AfterStartupTask(
    AfterStartupTask&& other) = default;
AwContentBrowserClient::StartupInfo::StartupInfo() = default;
AwContentBrowserClient::StartupInfo::~StartupInfo() = default;

namespace {
#if DCHECK_IS_ON()
// A boolean value to determine if the NetworkContext has been created yet. This
// exists only to check correctness: g_check_cleartext_permitted may only be set
// before the NetworkContext has been created (otherwise,
// g_check_cleartext_permitted won't have any effect).
bool g_created_network_context_params = false;
#endif

// On apps targeting API level O or later, check cleartext is enforced.
bool g_check_cleartext_permitted = false;

// Get async check tracker to make Safe Browsing v5 check asynchronous
base::WeakPtr<AsyncCheckTracker> GetAsyncCheckTracker(
    const base::RepeatingCallback<content::WebContents*()>& wc_getter,
    content::FrameTreeNodeId frame_tree_node_id) {
  content::WebContents* web_contents = wc_getter.Run();
  // Check whether current frame is a pre-rendered frame. WebView does not
  // support NoStatePrefetch, so we do not check for that.
  if (web_contents == nullptr ||
      web_contents->IsPrerenderedFrame(frame_tree_node_id)) {
    return nullptr;
  }

  // Setting should_sync_checker_check_allowlist to false since the allowlist
  // is not available on WebView.
  return AsyncCheckTracker::GetOrCreateForWebContents(
             web_contents,
             AwBrowserProcess::GetInstance()->GetSafeBrowsingUIManager(),
             /*should_sync_checker_check_allowlist=*/false)
      ->GetWeakPtr();
}

}  // anonymous namespace

std::string GetProduct() {
  return embedder_support::GetProductAndVersion();
}

std::string GetUserAgent() {
  // "Version/4.0" had been hardcoded in the legacy WebView.
  std::string product = "Version/4.0 " + GetProduct();
  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
          embedder_support::kUseMobileUserAgent)) {
    product += " Mobile";
  }

  if (base::FeatureList::IsEnabled(
          features::kWebViewReduceUAAndroidVersionDeviceModel)) {
    // The user-agent reduction feature for WebView, when enabled, should
    // produce a consistent, unified platform string to ensure predictable
    // behavior. This hardcoded value prevents device-specific platform details
    // (e.g., "X11; Linux" on desktop devices) from appearing in the reduced
    // User-Agent. The "Linux; Android 10; K; wv" string matches the expected
    // format for a reduced WebView User-Agent.
    constexpr char kUnifiedPlatformOsInfoWebview[] = "Linux; Android 10; K; wv";
    return embedder_support::BuildUserAgentFromOSAndProduct(
        kUnifiedPlatformOsInfoWebview, product);
  }

  return embedder_support::BuildUserAgentFromProductAndExtraOSInfo(
      product, "; wv", embedder_support::IncludeAndroidBuildNumber::Include);
}

// TODO(yirui): can use similar logic as in PrependToAcceptLanguagesIfNecessary
// in chrome/browser/android/preferences/pref_service_bridge.cc
// static
std::string AwContentBrowserClient::GetAcceptLangsImpl() {
  // Start with the current locale(s) in BCP47 format.
  std::string locales_string = AwContents::GetLocaleList();

  // If accept languages do not contain en-US, add in en-US which will be
  // used with a lower q-value.
  if (!base::Contains(locales_string, "en-US")) {
    locales_string += ",en-US";
  }
  return locales_string;
}

// static
void AwContentBrowserClient::set_check_cleartext_permitted(bool permitted) {
#if DCHECK_IS_ON()
  DCHECK(!g_created_network_context_params);
#endif
  g_check_cleartext_permitted = permitted;
}

// static
bool AwContentBrowserClient::get_check_cleartext_permitted() {
  return g_check_cleartext_permitted;
}

AwContentBrowserClient::AwContentBrowserClient(
    AwFeatureListCreator* aw_feature_list_creator)
    : sniff_file_urls_(AwSettings::GetAllowSniffingFileUrls()),
      aw_feature_list_creator_(aw_feature_list_creator) {
  // |aw_feature_list_creator| should not be null. The AwBrowserContext will
  // take the PrefService owned by the creator as the Local State instead
  // of loading the JSON file from disk.
  DCHECK(aw_feature_list_creator_);
}

AwContentBrowserClient::~AwContentBrowserClient() = default;

void AwContentBrowserClient::OnNetworkServiceCreated(
    network::mojom::NetworkService* network_service) {
  // TODO(crbug.com/40693524): If CertVerifierServiceFactory is moved to
  // a separate process, this will likely need to be set somewhere else instead
  // of here.
  content::GetCertVerifierServiceFactory()->SetUseChromeRootStore(
      false, base::DoNothing());

  network_service->SetUpHttpAuth(network::mojom::HttpAuthStaticParams::New());
  network_service->ConfigureHttpAuthPrefs(
      AwBrowserProcess::GetInstance()->CreateHttpAuthDynamicParams());
}

void AwContentBrowserClient::ConfigureNetworkContextParams(
    content::BrowserContext* context,
    bool in_memory,
    const base::FilePath& relative_partition_path,
    network::mojom::NetworkContextParams* network_context_params,
    cert_verifier::mojom::CertVerifierCreationParams*
        cert_verifier_creation_params) {
  DCHECK(context);

  content::GetNetworkService()->ConfigureHttpAuthPrefs(
      AwBrowserProcess::GetInstance()->CreateHttpAuthDynamicParams());

  AwBrowserContext* aw_context = static_cast<AwBrowserContext*>(context);
  aw_context->ConfigureNetworkContextParams(in_memory, relative_partition_path,
                                            network_context_params,
                                            cert_verifier_creation_params);

  mojo::PendingRemote<network::mojom::CookieManager> cookie_manager_remote;
  network_context_params->cookie_manager =
      cookie_manager_remote.InitWithNewPipeAndPassReceiver();

#if DCHECK_IS_ON()
  g_created_network_context_params = true;
#endif

  // Pass the mojo::PendingRemote<network::mojom::CookieManager> to
  // android_webview::CookieManager, so it can implement its APIs with this mojo
  // CookieManager.
  aw_context->GetCookieManager()->SetMojoCookieManager(
      std::move(cookie_manager_remote));
}

void AwContentBrowserClient::InitBrowserContextStore() {
  AwBrowserContextStore::GetOrCreateInstance();
}

std::unique_ptr<content::BrowserMainParts>
AwContentBrowserClient::CreateBrowserMainParts(bool /* is_integration_test */) {
  return std::make_unique<AwBrowserMainParts>(this);
}

bool IsAnyStartupTaskExperimentEnabled() {
  return AwBrowserMainParts::isWebViewStartupTasksExperimentEnabled() ||
         AwBrowserMainParts::isWebViewStartupTasksExperimentEnabledP2() ||
         AwBrowserMainParts::isStartupTaskYieldToNativeExperimentEnabled();
}

void AwContentBrowserClient::PostAfterStartupTask(
    const base::Location& from_here,
    const scoped_refptr<base::SequencedTaskRunner>& task_runner,
    base::OnceClosure task) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  if (!IsAnyStartupTaskExperimentEnabled()) {
    task_runner->PostTask(from_here, std::move(task));
    return;
  }

  if (startup_info_.startup_complete) {
    task_runner->PostTask(from_here, std::move(task));
    return;
  }

  AfterStartupTask task_info;
  task_info.from_here = from_here;
  task_info.task_runner = task_runner;
  task_info.task = std::move(task);
  startup_info_.after_startup_tasks.push_back(std::move(task_info));
}

void AwContentBrowserClient::OnStartupComplete() {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  DCHECK(!startup_info_.startup_complete);

  startup_info_.startup_complete = true;
  if (AwBrowserMainParts::isStartupTaskYieldToNativeExperimentEnabled()) {
    YieldToLooperChecker::GetInstance().SetStartupRunning(false);
  }

  // if the native ui task execution isn't enabled already, enable it.
  if (!startup_info_.enable_native_task_execution_callback.is_null()) {
    std::move(startup_info_.enable_native_task_execution_callback).Run();
  }

  auto& tasks_queue = startup_info_.after_startup_tasks;
  for (AfterStartupTask& after_startup_task : tasks_queue) {
    after_startup_task.task_runner->PostTask(
        after_startup_task.from_here, std::move(after_startup_task.task));
  }
  tasks_queue.clear();
}

void AwContentBrowserClient::OnUiTaskRunnerReady(
    base::OnceClosure enable_native_task_execution_callback) {
  if (!IsAnyStartupTaskExperimentEnabled()) {
    std::move(enable_native_task_execution_callback).Run();
    return;
  }

  startup_info_.enable_native_task_execution_callback =
      std::move(enable_native_task_execution_callback);

  if (AwBrowserMainParts::isStartupTaskYieldToNativeExperimentEnabled()) {
    YieldToLooperChecker::GetInstance().SetStartupRunning(true);
  }
}

std::unique_ptr<content::WebContentsViewDelegate>
AwContentBrowserClient::GetWebContentsViewDelegate(
    content::WebContents* web_contents) {
  return std::make_unique<AwWebContentsViewDelegate>(web_contents);
}

void AwContentBrowserClient::RenderProcessWillLaunch(
    content::RenderProcessHost* host) {
  // Grant content: scheme access to the whole renderer process, since we impose
  // per-view access checks, and access is granted by default (see
  // AwSettings.mAllowContentUrlAccess).
  content::ChildProcessSecurityPolicy::GetInstance()->GrantRequestScheme(
      host->GetDeprecatedID(), url::kContentScheme);
}

bool AwContentBrowserClient::IsExplicitNavigation(
    ui::PageTransition transition) {
  return ui::PageTransitionCoreTypeIs(transition, ui::PAGE_TRANSITION_TYPED);
}

bool AwContentBrowserClient::IsHandledURL(const GURL& url) {
  if (!url.is_valid()) {
    // We handle error cases.
    return true;
  }

  const std::string scheme = url.GetScheme();
  DCHECK_EQ(scheme, base::ToLowerASCII(scheme));
  static const char* const kProtocolList[] = {
      url::kHttpScheme,         url::kHttpsScheme,
#if BUILDFLAG(ENABLE_WEBSOCKETS)
      url::kWsScheme,           url::kWssScheme,
#endif  // BUILDFLAG(ENABLE_WEBSOCKETS)
      url::kDataScheme,         url::kBlobScheme,    url::kFileSystemScheme,
      content::kChromeUIScheme, url::kContentScheme,
  };
  if (scheme == url::kFileScheme) {
    // Return false for the "special" file URLs, so they can be loaded
    // even if access to file: scheme is not granted to the child process.
    return !IsAndroidSpecialFileUrl(url);
  }
  for (const char* supported_protocol : kProtocolList) {
    if (scheme == supported_protocol) {
      return true;
    }
  }
  return false;
}

bool AwContentBrowserClient::ForceSniffingFileUrlsForHtml() {
  return sniff_file_urls_;
}

void AwContentBrowserClient::AppendExtraCommandLineSwitches(
    base::CommandLine* command_line,
    int child_process_id) {
  if (!command_line->HasSwitch(switches::kSingleProcess)) {
    // The only kind of a child process WebView can have is renderer or utility.
    std::string process_type =
        command_line->GetSwitchValueASCII(switches::kProcessType);
    DCHECK(process_type == switches::kRendererProcess ||
           process_type == switches::kUtilityProcess)
        << process_type;

    static const char* const kSwitchNames[] = {
        ::switches::kEnableCrashReporter,
        ::switches::kEnableCrashReporterForTesting,
        embedder_support::kOriginTrialDisabledFeatures,
        embedder_support::kOriginTrialPublicKey,
    };

    command_line->CopySwitchesFrom(*base::CommandLine::ForCurrentProcess(),
                                   kSwitchNames);
  }

  if (base::FeatureList::IsEnabled(
          features::kWebViewConfigurableLibraryPrefetch)) {
    RendererLibraryPrefetchMode mode = GetRendererLibraryPrefetchMode();
    switch (mode) {
      case RendererLibraryPrefetchMode::kDisabled:
        command_line->AppendSwitchASCII(
            switches::kWebViewRendererLibraryPrefetch,
            switches::kWebViewRendererLibraryPrefetchDisabled);
        break;
      case RendererLibraryPrefetchMode::kEnabled:
        command_line->AppendSwitchASCII(
            switches::kWebViewRendererLibraryPrefetch,
            switches::kWebViewRendererLibraryPrefetchEnabled);
        break;
      default:
        // kDefault or unknown values are ignored. But sanitize for histograms.
        mode = RendererLibraryPrefetchMode::kDefault;
        break;
    }
    base::UmaHistogramEnumeration("Android.WebView.RendererLibraryPrefetchMode",
                                  mode);
  }
}

std::string AwContentBrowserClient::GetApplicationLocale() {
  return base::android::GetDefaultLocaleString();
}

std::string AwContentBrowserClient::GetAcceptLangs(
    content::BrowserContext* context) {
  return GetAcceptLangsImpl();
}

gfx::ImageSkia AwContentBrowserClient::GetDefaultFavicon() {
  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  // TODO(boliu): Bundle our own default favicon?
  return rb.GetImageNamed(IDR_DEFAULT_FAVICON).AsImageSkia();
}

content::GeneratedCodeCacheSettings
AwContentBrowserClient::GetGeneratedCodeCacheSettings(
    content::BrowserContext* context) {
  AwBrowserContext* browser_context = static_cast<AwBrowserContext*>(context);
  // We need to set a comparable limit for the code cache since the source file
  // needs to be in the HTTP cache for the code cache entry to be used. There
  // are two code caches that both use this value, so we pass half the the HTTP
  // cache size limit to keep the total cache usage to roughly 2x the HTTP cache
  // limit.
  int code_cache_limit = 0.5 * GetHttpCacheSize();
  if (base::FeatureList::IsEnabled(
          features::kWebViewCacheSizeLimitDerivedFromAppCacheQuota)) {
    code_cache_limit = features::kWebViewCodeCacheSizeLimitMultiplier.Get() *
                       GetHttpCacheSize();
  }

  return content::GeneratedCodeCacheSettings(
      true, code_cache_limit, browser_context->GetHttpCachePath());
}

void AwContentBrowserClient::AllowCertificateError(
    content::WebContents* web_contents,
    int cert_error,
    const net::SSLInfo& ssl_info,
    const GURL& request_url,
    bool is_primary_main_frame_request,
    bool strict_enforcement,
    base::OnceCallback<void(content::CertificateRequestResultType)> callback) {
  AwContentsClientBridge* client =
      AwContentsClientBridge::FromWebContents(web_contents);
  bool cancel_request = true;
  // We only call the callback once but we must pass ownership to a function
  // that conditionally calls it.
  auto split_callback = base::SplitOnceCallback(std::move(callback));
  if (client) {
    client->AllowCertificateError(cert_error, ssl_info.cert.get(), request_url,
                                  std::move(split_callback.first),
                                  &cancel_request);
  }
  if (cancel_request) {
    std::move(split_callback.second)
        .Run(content::CERTIFICATE_REQUEST_RESULT_TYPE_DENY);
  }
}

base::OnceClosure AwContentBrowserClient::SelectClientCertificate(
    content::BrowserContext* browser_context,
    int process_id,
    content::WebContents* web_contents,
    net::SSLCertRequestInfo* cert_request_info,
    net::ClientCertIdentityList client_certs,
    std::unique_ptr<content::ClientCertificateDelegate> delegate) {
  AwContentsClientBridge* client =
      web_contents ? AwContentsClientBridge::FromWebContents(web_contents)
                   : nullptr;
  if (client) {
    client->SelectClientCertificate(cert_request_info, std::move(delegate));
  }
  return base::OnceClosure();
}

bool AwContentBrowserClient::CanCreateWindow(
    content::RenderFrameHost* opener,
    const GURL& opener_url,
    const GURL& opener_top_level_frame_url,
    const url::Origin& source_origin,
    content::mojom::WindowContainerType container_type,
    const GURL& target_url,
    const content::Referrer& referrer,
    const std::string& frame_name,
    WindowOpenDisposition disposition,
    const blink::mojom::WindowFeatures& features,
    bool user_gesture,
    bool opener_suppressed,
    bool* no_javascript_access) {
  // We unconditionally allow popup windows at this stage and will give
  // the embedder the opporunity to handle displaying of the popup in
  // WebContentsDelegate::AddContents (via the
  // AwContentsClient.onCreateWindow callback).
  // Note that if the embedder has blocked support for creating popup
  // windows through AwSettings, then we won't get to this point as
  // the popup creation will have been blocked at the WebKit level.
  if (no_javascript_access) {
    *no_javascript_access = false;
  }

  content::WebContents* web_contents =
      content::WebContents::FromRenderFrameHost(opener);
  AwSettings* settings = AwSettings::FromWebContents(web_contents);

  return (settings && settings->GetJavaScriptCanOpenWindowsAutomatically()) ||
         user_gesture;
}

base::FilePath AwContentBrowserClient::GetDefaultDownloadDirectory() {
  // Android WebView does not currently use the Chromium downloads system.
  // Download requests are cancelled immediately when recognized. However the
  // download system still tries to start up and calls this before recognizing
  // the request has been cancelled.
  return base::FilePath();
}

std::string AwContentBrowserClient::GetDefaultDownloadName() {
  NOTREACHED() << "Android WebView does not use chromium downloads";
}

std::optional<base::FilePath>
AwContentBrowserClient::GetLocalTracesDirectory() {
  base::FilePath user_data_dir;
  if (!base::PathService::Get(android_webview::DIR_LOCAL_TRACES,
                              &user_data_dir)) {
    return std::nullopt;
  }
  DCHECK(!user_data_dir.empty());
  return user_data_dir;
}

std::unique_ptr<content::TracingDelegate>
AwContentBrowserClient::CreateTracingDelegate() {
  return std::make_unique<AwTracingDelegate>();
}

void AwContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
    const base::CommandLine& command_line,
    int child_process_id,
    content::PosixFileDescriptorInfo* mappings) {
  base::MemoryMappedFile::Region region;
  int fd = ui::GetMainAndroidPackFd(&region);
  CHECK_GE(fd, 0);
  mappings->ShareWithRegion(kAndroidWebViewMainPakDescriptor, fd, region);

  fd = ui::GetCommonResourcesPackFd(&region);
  CHECK_GE(fd, 0);
  mappings->ShareWithRegion(kAndroidWebView100PercentPakDescriptor, fd, region);

  // WebView will (currently) only ever have one locale pak, compared to Clank,
  // which has up to 2. This will change in the near future when we introduce
  // genders to locales.
  auto locale_paks = ui::GetLocalePaks();
  CHECK_EQ(locale_paks.size(), 1u);
  CHECK_GE(locale_paks.at(0).fd, 0);
  mappings->ShareWithRegion(kAndroidWebViewLocalePakDescriptor,
                            locale_paks.at(0).fd, locale_paks.at(0).region);

  int crash_signal_fd =
      crashpad::CrashHandlerHost::Get()->GetDeathSignalSocket();
  if (crash_signal_fd >= 0) {
    mappings->Share(kCrashDumpSignal, crash_signal_fd);
  }
}

void AwContentBrowserClient::OverrideWebPreferences(
    content::WebContents* web_contents,
    content::SiteInstance& main_frame_site,
    blink::web_pref::WebPreferences* web_prefs) {
  AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);
  if (aw_settings) {
    aw_settings->PopulateWebPreferences(web_prefs);
  }

  // Back-forward transitions are not enabled for webview (crbug.com/361600214).
  web_prefs->should_screenshot_on_mainframe_same_doc_navigation = false;

  AwWebContentsDelegate* delegate =
      static_cast<AwWebContentsDelegate*>(web_contents->GetDelegate());
  web_prefs->modal_context_menu =
      (delegate) ? delegate->isModalContextMenu() : false;
}

void AwContentBrowserClient::CreateThrottlesForNavigation(
    content::NavigationThrottleRegistry& registry) {
  // We allow intercepting only navigations within main frames. This
  // is used to post onPageStarted. We handle shouldOverrideUrlLoading
  // via a sync IPC.
  content::NavigationHandle& navigation_handle = registry.GetNavigationHandle();
  if (navigation_handle.IsInMainFrame()) {
    // MetricsNavigationThrottle requires that it runs before
    // NavigationThrottles that may delay or cancel navigations, so only
    // NavigationThrottles that don't delay or cancel navigations (e.g.
    // throttles that are only observing callbacks without affecting navigation
    // behavior) should be added before MetricsNavigationThrottle.
    // TODO(https://crbug.com/412524375): This assumption is fragile. This
    // should be cared by adding an attribute flag to
    // NavigationThrottleRegistry::AddThrottle().
    page_load_metrics::MetricsNavigationThrottle::CreateAndAdd(registry);
  }
  // Use Synchronous mode for the navigation interceptor, since this class
  // doesn't actually call into an arbitrary client, it just posts a task to
  // call onPageStarted. shouldOverrideUrlLoading happens earlier (see
  // ContentBrowserClient::ShouldOverrideUrlLoading).
  navigation_interception::InterceptNavigationDelegate::MaybeCreateAndAdd(
      registry, navigation_interception::SynchronyMode::kSync);

  AwBrowserContext* context =
      AwBrowserContext::FromWebContents(navigation_handle.GetWebContents());
  registry.AddThrottle(std::make_unique<PolicyBlocklistNavigationThrottle>(
      registry, user_prefs::UserPrefs::Get(context),
      AwPolicyBlocklistServiceFactory::GetForBrowserContext(context),
      SafeSearchFactory::GetForBrowserContext(context)));

  AwSafeBrowsingNavigationThrottle::MaybeCreateAndAdd(registry);

  if ((navigation_handle.GetNavigatingFrameType() ==
           FrameType::kPrimaryMainFrame ||
       navigation_handle.GetNavigatingFrameType() == FrameType::kSubframe) &&
      registry.IsHTTPOrHTTPS()) {
    AwSupervisedUserUrlClassifier* urlClassifier =
        AwSupervisedUserUrlClassifier::GetInstance();
    if (urlClassifier->ShouldCreateThrottle()) {
      registry.AddThrottle(
          std::make_unique<AwSupervisedUserThrottle>(registry, urlClassifier));
    }
  }
}

std::unique_ptr<content::PrefetchServiceDelegate>
AwContentBrowserClient::CreatePrefetchServiceDelegate(
    content::BrowserContext* browser_context) {
  AwBrowserContext* aw_browser_context =
      static_cast<AwBrowserContext*>(browser_context);
  return std::make_unique<AwPrefetchServiceDelegate>(aw_browser_context);
}

std::unique_ptr<content::DevToolsManagerDelegate>
AwContentBrowserClient::CreateDevToolsManagerDelegate() {
  return std::make_unique<AwDevToolsManagerDelegate>();
}

std::vector<std::unique_ptr<blink::URLLoaderThrottle>>
AwContentBrowserClient::CreateURLLoaderThrottles(
    const network::ResourceRequest& request,
    content::BrowserContext* browser_context,
    const base::RepeatingCallback<content::WebContents*()>& wc_getter,
    content::NavigationUIData* navigation_ui_data,
    content::FrameTreeNodeId frame_tree_node_id,
    std::optional<int64_t> navigation_id) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);

  // Set lookup mechanism based on feature flag
  HashRealTimeSelection hash_real_time_selection;
  base::WeakPtr<AsyncCheckTracker> async_check_tracker;
  if (base::FeatureList::IsEnabled(safe_browsing::kHashPrefixRealTimeLookups)) {
    hash_real_time_selection = HashRealTimeSelection::kDatabaseManager;
    async_check_tracker = GetAsyncCheckTracker(wc_getter, frame_tree_node_id);
  } else {
    hash_real_time_selection = HashRealTimeSelection::kNone;
    async_check_tracker = nullptr;
  }

  std::vector<std::unique_ptr<blink::URLLoaderThrottle>> result;
  result.push_back(safe_browsing::BrowserURLLoaderThrottle::Create(
      base::BindRepeating(
          [](AwContentBrowserClient* client) {
            return client->GetSafeBrowsingUrlCheckerDelegate();
          },
          base::Unretained(this)),
      wc_getter, frame_tree_node_id, navigation_id,
      // TODO(crbug.com/40663467): rt_lookup_service is
      // used to perform real time URL check, which is gated by UKM opted-in.
      // Since AW currently doesn't support UKM, this feature is not enabled.
      /* rt_lookup_service */ nullptr,
      /* hash_realtime_service */ nullptr,
      /* hash_realtime_selection */
      hash_real_time_selection,
      /* async_check_tracker */ async_check_tracker,
      /*referring_app_info=*/std::nullopt));

  if (request.destination == network::mojom::RequestDestination::kDocument) {
    const bool is_load_url =
        request.transition_type & ui::PAGE_TRANSITION_FROM_API;
    const bool is_go_back_forward =
        request.transition_type & ui::PAGE_TRANSITION_FORWARD_BACK;
    const bool is_reload = ui::PageTransitionCoreTypeIs(
        static_cast<ui::PageTransition>(request.transition_type),
        ui::PAGE_TRANSITION_RELOAD);
    if (is_load_url || is_go_back_forward || is_reload) {
      result.push_back(std::make_unique<AwURLLoaderThrottle>(
          static_cast<AwBrowserContext*>(browser_context)));
    }
  }

  return result;
}

scoped_refptr<safe_browsing::UrlCheckerDelegate>
AwContentBrowserClient::GetSafeBrowsingUrlCheckerDelegate() {
  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);

  if (!safe_browsing_url_checker_delegate_) {
    safe_browsing_url_checker_delegate_ = new AwUrlCheckerDelegateImpl(
        AwBrowserProcess::GetInstance()->GetSafeBrowsingDBManager(),
        AwBrowserProcess::GetInstance()->GetSafeBrowsingUIManager(),
        AwBrowserProcess::GetInstance()->GetSafeBrowsingAllowlistManager());
  }

  return safe_browsing_url_checker_delegate_;
}

bool AwContentBrowserClient::ShouldOverrideUrlLoading(
    content::FrameTreeNodeId frame_tree_node_id,
    bool browser_initiated,
    const GURL& gurl,
    const std::string& request_method,
    bool has_user_gesture,
    bool is_redirect,
    bool is_outermost_main_frame,
    bool is_prerendering,
    ui::PageTransition transition,
    bool* ignore_navigation) {
  *ignore_navigation = false;

  // Only GETs can be overridden.
  if (request_method != "GET") {
    return true;
  }

  bool application_initiated =
      browser_initiated || transition & ui::PAGE_TRANSITION_FORWARD_BACK;

  // Don't offer application-initiated navigations unless it's a redirect.
  if (application_initiated && !is_redirect) {
    return true;
  }

  // For HTTP schemes, only top-level navigations can be overridden. Similarly,
  // WebView Classic lets app override only top level about:blank navigations.
  // So we filter out non-top about:blank navigations here.
  //
  // Note: about:blank navigations are not received in this path at the moment,
  // they use the old SYNC IPC path as they are not handled by network stack.
  // However, the old path should be removed in future.
  if (!is_outermost_main_frame &&
      (gurl.SchemeIs(url::kHttpScheme) || gurl.SchemeIs(url::kHttpsScheme) ||
       gurl.SchemeIs(url::kAboutScheme))) {
    return true;
  }

  WebContents* web_contents =
      WebContents::FromFrameTreeNodeId(frame_tree_node_id);
  if (web_contents == nullptr) {
    return true;
  }
  AwContentsClientBridge* client_bridge =
      AwContentsClientBridge::FromWebContents(web_contents);
  if (client_bridge == nullptr) {
    return true;
  }

  std::u16string url = base::UTF8ToUTF16(gurl.possibly_invalid_spec());

  AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);
  if ((gurl.SchemeIs(url::kHttpScheme) || gurl.SchemeIs(url::kHttpsScheme)) &&
      aw_settings->enterprise_authentication_app_link_policy_enabled() &&
      android_webview::AwBrowserProcess::GetInstance()
          ->GetEnterpriseAuthenticationAppLinkManager()
          ->IsEnterpriseAuthenticationUrl(gurl)) {
    bool success = client_bridge->SendBrowseIntent(url);
    if (success) {
      *ignore_navigation = true;
      return true;
    }
  }

  net::HttpRequestHeaders request_headers;
  if (is_prerendering) {
    // We pass the `Sec-Purpose` header to tell the embedder that the navigation
    // is for prerendering, within the existing API surface.
    request_headers.SetHeader(blink::kSecPurposeHeaderName,
                              blink::kSecPurposePrefetchPrerenderHeaderValue);
  }

  return client_bridge->ShouldOverrideUrlLoading(
      url, has_user_gesture, is_redirect, is_outermost_main_frame,
      request_headers, ignore_navigation);
}

bool AwContentBrowserClient::SupportsAvoidUnnecessaryBeforeUnloadCheckSync() {
  // WebView allows the embedder to override navigation in such a way that
  // might trigger reentrancy if this returned true. See comments in
  // `ContentBrowserClient::SupportsAvoidUnnecessaryBeforeUnloadCheckSync()` for
  // more details.
  return false;
}

content::ContentBrowserClient::ShouldAllowSameSiteRenderFrameHostChangeResult
AwContentBrowserClient::ShouldAllowSameSiteRenderFrameHostChange(
    const content::RenderFrameHost& rfh) {
  if (!base::FeatureList::IsEnabled(features::kWebViewRenderDocument)) {
    return content::ContentBrowserClient::
        ShouldAllowSameSiteRenderFrameHostChangeResult::kNotAllowed;
  }

  content::RenderFrameHost* rfh_ptr =
      const_cast<content::RenderFrameHost*>(&rfh);
  content::WebContents* web_contents =
      content::WebContents::FromRenderFrameHost(rfh_ptr);
  AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);
  // Don't allow same-site RFH swap on non-crashed frames if the initial page
  // scale is non-default. See the comment in `AwSettings` about this for more
  // details.
  if (aw_settings && rfh_ptr->IsRenderFrameLive() &&
      aw_settings->initial_page_scale_is_non_default()) {
    return content::ContentBrowserClient::
        ShouldAllowSameSiteRenderFrameHostChangeResult::kNotAllowed;
  }

  // The WebViewRenderDocument flag is enabled and we're not in an unsupported
  // case. Force the same-site RenderFrameHost change regardless of the state
  // of the RenderDocument flag, so that we only need to enable the
  // WebViewRenderDocument flag to enable RenderDocument on all frames.
  return content::ContentBrowserClient::
      ShouldAllowSameSiteRenderFrameHostChangeResult::kAllowedOverrideLevel;
}

std::unique_ptr<content::LoginDelegate>
AwContentBrowserClient::CreateLoginDelegate(
    const net::AuthChallengeInfo& auth_info,
    content::WebContents* web_contents,
    content::BrowserContext* browser_context,
    const content::GlobalRequestID& request_id,
    bool is_request_for_primary_main_frame_navigation,
    bool is_request_for_navigation,
    const GURL& url,
    scoped_refptr<net::HttpResponseHeaders> response_headers,
    bool first_auth_attempt,
    content::GuestPageHolder* guest,
    content::LoginDelegate::LoginAuthRequiredCallback auth_required_callback) {
  return std::make_unique<AwHttpAuthHandler>(auth_info, web_contents,
                                             first_auth_attempt,
                                             std::move(auth_required_callback));
}

bool AwContentBrowserClient::HandleExternalProtocol(
    const GURL& url,
    content::WebContents::Getter wc_getter,
    content::FrameTreeNodeId frame_tree_node_id,
    content::NavigationUIData* navigation_data,
    bool is_primary_main_frame,
    bool /* is_in_fenced_frame_tree */,
    network::mojom::WebSandboxFlags /*sandbox_flags*/,
    ui::PageTransition page_transition,
    bool has_user_gesture,
    const std::optional<url::Origin>& initiating_origin,
    content::RenderFrameHost* initiator_document,
    const net::IsolationInfo& isolation_info,
    mojo::PendingRemote<network::mojom::URLLoaderFactory>* out_factory) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);

  // Sandbox flags
  // =============
  //
  // Contrary to the chrome/ implementation, sandbox flags are ignored. Webview
  // by itself to not invoke external apps. However it let the embedding
  // app to intercept the request and decide what to do. We need to be careful
  // here not breaking applications, so the sandbox flags are ignored.

  mojo::PendingReceiver<network::mojom::URLLoaderFactory> receiver =
      out_factory->InitWithNewPipeAndPassReceiver();

  content::WebContents* web_contents = wc_getter.Run();
  scoped_refptr<AwBrowserContextIoThreadHandle> browser_context_handle =
      web_contents == nullptr
          ? nullptr
          : base::MakeRefCounted<AwBrowserContextIoThreadHandle>(
                static_cast<AwBrowserContext*>(
                    web_contents->GetBrowserContext()));

  // Pass WebContentsKey to look up AwContentsIoThreadClient in
  // WebContentsToIoThreadClientMap later.
  std::optional<WebContentsKey> web_contents_key;
  if (web_contents) {
    web_contents_key = GetWebContentsKey(*web_contents);
  }

  // We don't need to care for |security_options| as the factories constructed
  // below are used only for navigation.
  // We also don't care about retrieving cookies in this case because these will
  // be schemes unrelated to the regular network stack so it doesn't make sense
  // to look for cookies. Providing a nullopt for the cookie manager lets
  // the AwProxyingURLLoaderFactory know to skip that work.
  content::GetIOThreadTaskRunner({})->PostTask(
      FROM_HERE,
      base::BindOnce(
          [](mojo::PendingReceiver<network::mojom::URLLoaderFactory> receiver,
             std::optional<WebContentsKey> web_contents_key,
             content::FrameTreeNodeId frame_tree_node_id,
             scoped_refptr<AwBrowserContextIoThreadHandle>
                 browser_context_handle,
             const net::IsolationInfo& isolation_info) {
            // Manages its own lifetime.
            new android_webview::AwProxyingURLLoaderFactory(
                /* cookie_manager=*/std::nullopt,
                /* cookie_access_policy=*/nullptr, isolation_info,
                web_contents_key, frame_tree_node_id, std::move(receiver),
                mojo::NullRemote(),
                /* intercept_only=*/true,
                /* security_options=*/std::nullopt,
                /* origin_matched_headers=*/{},
                std::move(browser_context_handle),
                /* navigation_id=*/std::nullopt);
          },
          std::move(receiver), web_contents_key, frame_tree_node_id,
          std::move(browser_context_handle), isolation_info));
  return false;
}

void AwContentBrowserClient::RegisterNonNetworkSubresourceURLLoaderFactories(
    int render_process_id,
    int render_frame_id,
    const std::optional<url::Origin>& request_initiator_origin,
    NonNetworkURLLoaderFactoryMap* factories) {
  WebContents* web_contents = content::WebContents::FromRenderFrameHost(
      content::RenderFrameHost::FromID(render_process_id, render_frame_id));
  AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);

  if (aw_settings && aw_settings->GetAllowFileAccess()) {
    AwBrowserContext* aw_browser_context =
        AwBrowserContext::FromWebContents(web_contents);
    factories->emplace(
        url::kFileScheme,
        content::CreateFileURLLoaderFactory(
            aw_browser_context->GetPath(),
            aw_browser_context->GetSharedCorsOriginAccessList()));
  }
}

bool AwContentBrowserClient::ShouldAllowNoLongerUsedProcessToExit() {
  // TODO(crbug.com/40803531): Add Android WebView support for allowing a
  // renderer process to exit when only non-live RenderFrameHosts remain,
  // without consulting the app's OnRenderProcessGone crash handlers.
  return false;
}

bool AwContentBrowserClient::ShouldIsolateErrorPage(bool in_main_frame) {
  return false;
}

bool AwContentBrowserClient::ShouldEnableStrictSiteIsolation() {
  // TODO(lukasza): When/if we eventually add OOPIF support for AW we should
  // consider running AW tests with and without site-per-process (and this might
  // require returning true below).  Adding OOPIF support for AW is tracked by
  // https://crbug.com/806404.
  return false;
}

size_t AwContentBrowserClient::GetMaxRendererProcessCountOverride() {
  // TODO(crbug.com/40560171): These options can currently can only be turned by
  // by manually overriding command line switches because
  // `ShouldDisableSiteIsolation` returns true. Should coordinate if/when
  // enabling this in production.
  if (content::SiteIsolationPolicy::UseDedicatedProcessesForAllSites() ||
      content::SiteIsolationPolicy::AreIsolatedOriginsEnabled() ||
      content::SiteIsolationPolicy::IsStrictOriginIsolationEnabled()) {
    // Do not restrict the max renderer process count for these site isolation
    // modes. This allows OOPIFs to happen on android webview.
    return 0u;  // Use default.
  }
  return 1u;
}

bool AwContentBrowserClient::ShouldDisableSiteIsolation(
    content::SiteIsolationMode site_isolation_mode) {
  // Since AW does not yet support OOPIFs, we must return true here to disable
  // features that may trigger OOPIFs, such as origin isolation.
  //
  // Adding OOPIF support for AW is tracked by https://crbug.com/806404.
  return true;
}

bool AwContentBrowserClient::ShouldDisableOriginIsolation() {
  // Since AW does not yet support OOPIFs, we must return true here to disable
  // features that may trigger OOPIFs, such as origin isolation.
  //
  // Adding OOPIF support for AW is tracked by https://crbug.com/806404.
  return true;
}

bool AwContentBrowserClient::ShouldLockProcessToSite(
    content::BrowserContext* browser_context,
    const GURL& effective_url) {
  // TODO(lukasza): https://crbug.com/806404: Once Android WebView supports
  // OOPIFs, we should remove this ShouldLockProcess overload.  Till then,
  // returning false helps avoid accidentally applying citadel-style Site
  // Isolation enforcement to Android WebView (and causing incorrect renderer
  // kills).
  return false;
}

bool AwContentBrowserClient::ShouldEnforceNewCanCommitUrlChecks() {
  // TODO(https://crbug.com/326250356): Diagnose any remaining Android WebView
  // crashes from these new checks and then remove this function.
  return true;
}

void AwContentBrowserClient::WillCreateURLLoaderFactory(
    content::BrowserContext* browser_context,
    content::RenderFrameHost* frame,
    int render_process_id,
    URLLoaderFactoryType type,
    const url::Origin& request_initiator,
    const net::IsolationInfo& isolation_info,
    std::optional<int64_t> navigation_id,
    ukm::SourceIdObj ukm_source_id,
    network::URLLoaderFactoryBuilder& factory_builder,
    mojo::PendingRemote<network::mojom::TrustedURLLoaderHeaderClient>*
        header_client,
    bool* bypass_redirect_checks,
    bool* disable_secure_dns,
    network::mojom::URLLoaderFactoryOverridePtr* factory_override,
    scoped_refptr<base::SequencedTaskRunner> navigation_response_task_runner) {
  TRACE_EVENT0("android_webview",
               "AwContentBrowserClient::WillCreateURLLoaderFactory");
  DCHECK_CURRENTLY_ON(BrowserThread::UI);

  mojo::PendingReceiver<network::mojom::URLLoaderFactory> proxied_receiver;
  mojo::PendingRemote<network::mojom::URLLoaderFactory> target_factory_remote;

  if (factory_override) {
    // We are interested in factories "inside" of CORS, so use
    // |factory_override|.
    *factory_override = network::mojom::URLLoaderFactoryOverride::New();
    proxied_receiver =
        (*factory_override)
            ->overriding_factory.InitWithNewPipeAndPassReceiver();
    (*factory_override)->overridden_factory_receiver =
        target_factory_remote.InitWithNewPipeAndPassReceiver();
    (*factory_override)->skip_cors_enabled_scheme_check = true;
  } else {
    // In this case, |factory_override| is not given. But all callers of
    // ContentBrowserClient::WillCreateURLLoaderFactory guarantee that
    // |factory_override| is null only when the security features on the network
    // service is no-op for requests coming to the URLLoaderFactory. Hence we
    // can use |factory_builder| here.
    std::tie(proxied_receiver, target_factory_remote) =
        factory_builder.Append();
  }
  scoped_refptr<AwBrowserContextIoThreadHandle> browser_context_handle =
      base::MakeRefCounted<AwBrowserContextIoThreadHandle>(
          static_cast<AwBrowserContext*>(browser_context));

  mojo::PendingRemote<network::mojom::CookieManager> cookie_manager;
  browser_context->GetDefaultStoragePartition()
      ->GetNetworkContext()
      ->GetCookieManager(cookie_manager.InitWithNewPipeAndPassReceiver());

  AwBrowserContext* aw_browser_context =
      static_cast<AwBrowserContext*>(browser_context);
  AwCookieAccessPolicy* cookie_access_policy =
      aw_browser_context->GetCookieManager()->cookie_access_policy();

  if (frame) {
    auto security_options =
        std::make_optional<AwProxyingURLLoaderFactory::SecurityOptions>();
    security_options->disable_web_security =
        base::CommandLine::ForCurrentProcess()->HasSwitch(
            switches::kDisableWebSecurity);
    WebContents* web_contents = WebContents::FromRenderFrameHost(frame);
    const auto& preferences = web_contents->GetOrCreateWebPreferences();
    // See also //android_webview/docs/cors-and-webview-api.md to understand how
    // each settings affect CORS behaviors on file:// and content://.
    if (request_initiator.scheme() == url::kFileScheme) {
      security_options->disable_web_security |=
          preferences.allow_universal_access_from_file_urls;
      // Usual file:// to file:// requests are mapped to kNoCors if the setting
      // is set to true. Howover, file:///android_{asset|res}/ still uses kCors
      // and needs to permit it in the |security_options|.
      security_options->allow_cors_to_same_scheme =
          preferences.allow_file_access_from_file_urls;
    } else if (request_initiator.scheme() == url::kContentScheme) {
      security_options->allow_cors_to_same_scheme =
          preferences.allow_file_access_from_file_urls ||
          preferences.allow_universal_access_from_file_urls;
    }

    // Pass WebContentsKey to look up AwContentsIoThreadClient in
    // WebContentsToIoThreadClientMap later.
    std::optional<WebContentsKey> web_contents_key;
    web_contents_key = GetWebContentsKey(*web_contents);

    content::GetIOThreadTaskRunner({})->PostTask(
        FROM_HERE,
        base::BindOnce(&AwProxyingURLLoaderFactory::CreateProxy,
                       std::move(cookie_manager), cookie_access_policy,
                       isolation_info, web_contents_key,
                       frame->GetFrameTreeNodeId(), std::move(proxied_receiver),
                       std::move(target_factory_remote), security_options,
                       aw_browser_context->GetOriginMatchedHeaders(),
                       std::move(browser_context_handle), navigation_id));
  } else {
    // A service worker and worker subresources set nullptr to |frame|, and
    // work without seeing the AllowUniversalAccessFromFileURLs setting. So,
    // we don't pass a valid |security_options| here.
    content::GetIOThreadTaskRunner({})->PostTask(
        FROM_HERE,
        base::BindOnce(
            &AwProxyingURLLoaderFactory::CreateProxy, std::move(cookie_manager),
            cookie_access_policy, isolation_info,
            /*web_contents_key=*/std::nullopt, content::FrameTreeNodeId(),
            std::move(proxied_receiver), std::move(target_factory_remote),
            std::nullopt /* security_options */,
            aw_browser_context->GetOriginMatchedHeaders(),
            std::move(browser_context_handle), navigation_id));
  }
}

uint32_t AwContentBrowserClient::GetWebSocketOptions(
    content::RenderFrameHost* frame) {
  uint32_t options = network::mojom::kWebSocketOptionNone;
  if (!frame) {
    return options;
  }
  content::WebContents* web_contents =
      content::WebContents::FromRenderFrameHost(frame);
  AwContents* aw_contents = AwContents::FromWebContents(web_contents);
  AwBrowserContext* aw_context =
      AwBrowserContext::FromWebContents(web_contents);

  bool global_cookie_policy = aw_context->GetCookieManager()
                                  ->cookie_access_policy()
                                  ->GetShouldAcceptCookies();
  bool third_party_cookie_policy = aw_contents->AllowThirdPartyCookies();
  if (!global_cookie_policy) {
    options |= network::mojom::kWebSocketOptionBlockAllCookies;
  } else if (!third_party_cookie_policy) {
    options |= network::mojom::kWebSocketOptionBlockThirdPartyCookies;
  }
  return options;
}

bool AwContentBrowserClient::WillCreateRestrictedCookieManager(
    network::mojom::RestrictedCookieManagerRole role,
    content::BrowserContext* browser_context,
    const url::Origin& origin,
    const net::IsolationInfo& isolation_info,
    bool is_service_worker,
    int process_id,
    int routing_id,
    mojo::PendingReceiver<network::mojom::RestrictedCookieManager>* receiver) {
  mojo::PendingReceiver<network::mojom::RestrictedCookieManager> orig_receiver =
      std::move(*receiver);

  mojo::PendingRemote<network::mojom::RestrictedCookieManager>
      target_rcm_remote;
  *receiver = target_rcm_remote.InitWithNewPipeAndPassReceiver();

  AwBrowserContext* aw_context =
      static_cast<AwBrowserContext*>(browser_context);
  AwCookieAccessPolicy* aw_cookie_access_policy =
      aw_context->GetCookieManager()->cookie_access_policy();

  AwProxyingRestrictedCookieManager::CreateAndBind(
      std::move(target_rcm_remote), is_service_worker, process_id, routing_id,
      std::move(orig_receiver), aw_cookie_access_policy);

  return false;  // only made a proxy, still need the actual impl to be made.
}

std::string AwContentBrowserClient::GetProduct() {
  // Return the unreduced product version regardless of the user agent reduction
  // policy. The call sites do not require user agent reduction and having the
  // unreduced version is necessary for performance tracing.
  if (base::FeatureList::IsEnabled(features::kWebViewUnreducedProductVersion)) {
    return std::string(version_info::GetProductNameAndVersionForUserAgent());
  }
  return android_webview::GetProduct();
}

std::string AwContentBrowserClient::GetUserAgent() {
  return android_webview::GetUserAgent();
}

blink::UserAgentMetadata AwContentBrowserClient::GetUserAgentMetadata() {
  return AwClientHintsControllerDelegate::GetUserAgentMetadataOverrideBrand();
}

content::ContentBrowserClient::WideColorGamutHeuristic
AwContentBrowserClient::GetWideColorGamutHeuristic() {
  return WideColorGamutHeuristic::kUseWindow;
}

void AwContentBrowserClient::LogWebFeatureForCurrentPage(
    content::RenderFrameHost* render_frame_host,
    blink::mojom::WebFeature feature) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  page_load_metrics::MetricsWebContentsObserver::RecordFeatureUsage(
      render_frame_host, feature);
}

void AwContentBrowserClient::LogWebDXFeatureForCurrentPage(
    content::RenderFrameHost* render_frame_host,
    blink::mojom::WebDXFeature feature) {
  DCHECK_CURRENTLY_ON(BrowserThread::UI);
  page_load_metrics::MetricsWebContentsObserver::RecordFeatureUsage(
      render_frame_host, feature);
}

content::ContentBrowserClient::PrivateNetworkRequestPolicyOverride
AwContentBrowserClient::ShouldOverridePrivateNetworkRequestPolicy(
    content::BrowserContext* browser_context,
    const url::Origin& origin) {
  // Webview does not implement support for deprecation trials, so webview apps
  // broken by Private Network Access restrictions cannot help themselves by
  // registering for the trial.
  // See crbug.com/1255675.
  return content::ContentBrowserClient::PrivateNetworkRequestPolicyOverride::
      kForceAllow;
}

content::SpeechRecognitionManagerDelegate*
AwContentBrowserClient::CreateSpeechRecognitionManagerDelegate() {
  return new AwSpeechRecognitionManagerDelegate();
}

bool AwContentBrowserClient::HasErrorPage(int http_status_code) {
  return http_status_code >= 400;
}

bool AwContentBrowserClient::SuppressDifferentOriginSubframeJSDialogs(
    content::BrowserContext* browser_context) {
  return false;
}

bool AwContentBrowserClient::ShouldPreconnectNavigation(
    content::RenderFrameHost* render_frame_host) {
  // This didn't make a performance improvement in WebView.
  return false;
}

void AwContentBrowserClient::OnDisplayInsecureContent(
    content::WebContents* web_contents) {
  AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);
  if (aw_settings) {
    UMA_HISTOGRAM_ENUMERATION(
        "Android.WebView.OptionallyBlockableMixedContentLoaded.Mode",
        aw_settings->GetMixedContentMode(),
        AwSettings::MixedContentMode::COUNT);
  }
}

blink::mojom::OriginTrialsSettingsPtr
AwContentBrowserClient::GetOriginTrialsSettings() {
  return AwBrowserProcess::GetInstance()
      ->GetOriginTrialsSettingsStorage()
      ->GetSettings();
}

network::mojom::AttributionSupport
AwContentBrowserClient::GetAttributionSupport(
    AttributionReportingOsApiState state,
    bool client_os_disabled) {
  // WebView only supports OS-level attribution and not web-attribution.
  switch (state) {
    case AttributionReportingOsApiState::kDisabled:
      return network::mojom::AttributionSupport::kNone;
    case AttributionReportingOsApiState::kEnabled:
      return client_os_disabled ? network::mojom::AttributionSupport::kNone
                                : network::mojom::AttributionSupport::kOs;
  }
}

bool AwContentBrowserClient::IsAttributionReportingOperationAllowed(
    content::BrowserContext* browser_context,
    AttributionReportingOperation operation,
    content::RenderFrameHost* rfh,
    const url::Origin* source_origin,
    const url::Origin* destination_origin,
    const url::Origin* reporting_origin,
    bool* can_bypass) {
  AwBrowserContext* aw_context =
      static_cast<AwBrowserContext*>(browser_context);
  // WebView only supports OS-level attribution and not web-attribution.
  // Note: We do not check here if attribution reporting has been disabled
  // for the associated WebView as this is checked at the start of processing
  // an attribution event.
  switch (operation) {
    case AttributionReportingOperation::kAny:
    case AttributionReportingOperation::kOsSource:
    case AttributionReportingOperation::kOsTrigger:
    case AttributionReportingOperation::kOsSourceVerboseDebugReport:
    case AttributionReportingOperation::kOsTriggerVerboseDebugReport:
      return true;
    case AttributionReportingOperation::kSource:
    case AttributionReportingOperation::kTrigger:
    case AttributionReportingOperation::kSourceVerboseDebugReport:
    case AttributionReportingOperation::kTriggerVerboseDebugReport:
    case AttributionReportingOperation::kReport:
    case AttributionReportingOperation::kSourceTransitionalDebugReporting:
    case AttributionReportingOperation::kTriggerTransitionalDebugReporting:
    case AttributionReportingOperation::kSourceAggregatableDebugReport:
    case AttributionReportingOperation::kTriggerAggregatableDebugReport:
      return false;
    case AttributionReportingOperation::kOsSourceTransitionalDebugReporting:
    case AttributionReportingOperation::kOsTriggerTransitionalDebugReporting: {
      if (!aw_context->GetCookieManager()
               ->cookie_access_policy()
               ->GetShouldAcceptCookies()) {
        return false;
      }

      WebContents* web_contents =
          content::WebContents::FromRenderFrameHost(rfh);
      AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);
      if (!aw_settings) {
        return false;
      }

      return aw_settings->GetAllowThirdPartyCookies();
    }
  }

  NOTREACHED();
}

content::ContentBrowserClient::AttributionReportingOsRegistrars
AwContentBrowserClient::GetAttributionReportingOsRegistrars(
    content::WebContents* web_contents) {
  // Attribution reporting can register a source to either the top level origin
  // or the app. For WebView the default is to register sources against the app
  // as:
  // 1. WebViews are often used in cases where for sources the top level origin
  // is not as relevant as the app context.
  // 2. Web registration APIs currently require a special registration from the
  // app in Android for registering sources and the more common case is that the
  // app does not have this registration. Note: This behaviour can be switched
  // to registering against the top level origin via an AndroidX API

  // Attribution reporting can register a trigger to either the top level origin
  // or the app. For WebView the default is to register triggers against the top
  // level origin as:
  // 1. WebViews are mostly used in cases where for triggers the app context is
  // not as relevant as the top level origin. Note: This behaviour can be
  // switched to registering against the app via an AndroidX API

  AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);

  if (!aw_settings) {
    return {AttributionReportingOsRegistrar::kDisabled,
            AttributionReportingOsRegistrar::kDisabled};
  }

  AwSettings::AttributionBehavior attribution_behavior =
      aw_settings->GetAttributionBehavior();

  switch (attribution_behavior) {
    case AwSettings::AttributionBehavior::WEB_SOURCE_AND_WEB_TRIGGER:
      return {AttributionReportingOsRegistrar::kWeb,
              AttributionReportingOsRegistrar::kWeb};
    case AwSettings::AttributionBehavior::APP_SOURCE_AND_WEB_TRIGGER:
      return {AttributionReportingOsRegistrar::kOs,
              AttributionReportingOsRegistrar::kWeb};
    case AwSettings::AttributionBehavior::APP_SOURCE_AND_APP_TRIGGER:
      return {AttributionReportingOsRegistrar::kOs,
              AttributionReportingOsRegistrar::kOs};
    case AwSettings::AttributionBehavior::DISABLED:
      return {AttributionReportingOsRegistrar::kDisabled,
              AttributionReportingOsRegistrar::kDisabled};
  }

  NOTREACHED();
}

bool AwContentBrowserClient::IsFullCookieAccessAllowed(
    content::BrowserContext* browser_context,
    content::WebContents* web_contents,
    const GURL& url,
    const blink::StorageKey& storage_key,
    net::CookieSettingOverrides overrides) {
  return AreThirdPartyCookiesGenerallyAllowed(browser_context, web_contents);
}

bool AwContentBrowserClient::AreThirdPartyCookiesGenerallyAllowed(
    content::BrowserContext* browser_context,
    content::WebContents* web_contents) {
  if (!web_contents) {
    // We do not allow third-party cookie access from service workers.
    return false;
  }
  AwSettings* aw_settings = AwSettings::FromWebContents(web_contents);
  if (!aw_settings) {
    return false;
  }

  return aw_settings->GetAllowThirdPartyCookies();
}

bool AwContentBrowserClient::AllowNonActivatedCrossOriginPaintHolding() {
  // In WebView, we allow non-activated cross-origin paint holding, since apps
  // currently experience this behavior and are in control of what to show.
  // TODO(crbug.com/368087192): We can consider disabling it while monitoring
  // for any breakages.
  return true;
}

bool AwContentBrowserClient::IsSharedStorageAllowed(
    content::BrowserContext* browser_context,
    content::RenderFrameHost* rfh,
    const url::Origin& top_frame_origin,
    const url::Origin& accessing_origin,
    std::string* out_debug_message,
    bool* out_block_is_site_setting_specific) {
  // TODO(https://crbug.com/401255068): We should have a more stringent check
  // here before launching beyond DEV.
  return base::FeatureList::IsEnabled(network::features::kSharedStorageAPI);
}

bool AwContentBrowserClient::IsSharedStorageSelectURLAllowed(
    content::BrowserContext* browser_context,
    const url::Origin& top_frame_origin,
    const url::Origin& accessing_origin,
    std::string* out_debug_message,
    bool* out_block_is_site_setting_specific) {
  // TODO(https://crbug.com/401255068): We should have a more stringent check
  // here before launching beyond DEV.
  return base::FeatureList::IsEnabled(network::features::kSharedStorageAPI);
}

bool AwContentBrowserClient::ShouldAnimateBackForwardTransitions() {
  return false;
}

}  // namespace android_webview