Add support for GL_CHROMIUM_consistent_uniform_locations

BUG=132844
TEST=unit tests

Review URL: https://chromiumcodereview.appspot.com/10568003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@142879 0039d316-1c4b-4281-b951-d872f2087c98
23 files changed