Update the storage locations used by the Chromium HTTP stack

This updates the strorage locations to better match those used by the
Android HTTP stack.

The corresponding external/webkit change is
https://android-git.corp.google.com/g/70643

Bug: 3039536
Change-Id: Ia7ea68d1472e96788a7fbaa6e8f7aa1ee51b3fb0
3 files changed