IATHook
This directory contains a helper, IATHook, that allows placement of hooks on particular loaded dlls by modifying their import address table. This is very invasive and should be used with caution.
Consumers in chrome include //sandbox/policy and //chrome/chrome_elf. As this is used very early in process startup it cannot use //base or partition alloc. Tests are in //chrome/chrome_elf to validate these constraints.