Add bit to GrGLCaps for fixed function support

R=robertphillips@google.com

Author: bsalomon@google.com

Review URL: https://chromiumcodereview.appspot.com/23587014

git-svn-id: http://skia.googlecode.com/svn/trunk/src@11043 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed