gpu: Disable crashing WebGL tests on Android

BUG=341698
TBR=kbr@chromium.org

Review URL: https://codereview.chromium.org/167313005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251755 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251755