Handle GL errors when querying the multisample count.
Handle GL errors when querying the multisample count.

I believe this bug can only be triggered when there is a corresponding OpenGL bug.  However, the i915 driver has this bug.

Patch from Kenneth Waters <kwaters@chromium.org>.
TEST=built and run against broken i915 driver
BUG=none

Review URL: http://codereview.chromium.org/4710002

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@65809 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser