I neglected to run all of the WebGL layout tests before landing https://bugs.webkit.org/show_bug.cgi?id=40316 . The EXTENSIONS enum is still being tested by fast/canvas/webgl/constants.html .
Created attachment 76272 [details] Patch
Comment on attachment 76272 [details] Patch R=me
Committed r73812: <http://trac.webkit.org/changeset/73812>