Fix invalid enum error when checking for core profile in GrGLInterface::validate()

R=robertphillips@google.com

Review URL: https://codereview.chromium.org/23691022

git-svn-id: http://skia.googlecode.com/svn/trunk@11040 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed