DirectWrite Font Cache browser side hookup
This part is mainly to hookup browser side for building and loading font cache.
In browser's postprofileinit if font cache already exists in user profile directory
then we load that and create a read only shared memory section. If cache is not there
then we spawn a Chrome utility process to build font cache, which will be used when browser restarts.
For details on how whole thing works please look at design document at https://goto.google.com/font-cache-design
BUG=406659
R=cpu, scottmg, ananta
Review URL: https://codereview.chromium.org/724633002
Cr-Commit-Position: refs/heads/master@{#304277}
16 files changed
