Integrates libjpeg-turbo into Chromium (Chromium side)
This change is the Chromium-side change that integrates libjpeg-turbo into Chromium. (We need another change for WebKit.) It adds a GYP option 'libjpeg_turbo' so we can switch from libjpeg to libjpeg-turbo and use libjpeg-turbo when its value is 1. (Unfortunately, its value must be 0 for now to avoid build breaks until we land all changes required for libjpeg-turbo.)

BUG=48789
TEST=build Chromium.
Review URL: http://codereview.chromium.org/5292007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@68453 0039d316-1c4b-4281-b951-d872f2087c98
8 files changed