content_gl_tests were failing because, we are checking for rgb565 platform support
on hardware and failing intentionally, which was not correct, the test should be skiped instead. This patch takes care of that along with the base patch.
On Aura with Nvidiea drivers the support is not there, so the test fails previously now weare skipping it by displaying the reason.
Android the support gets passed.


BUG=323150

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=245772

Review URL: https://codereview.chromium.org/133363004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245896 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245896
Stub clang plugin to check consistency of the Blink GC infrastructure.

R=ager@chromium.org, thakis@chromium.org
BUG=334149

Review URL: https://codereview.chromium.org/133463002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245897 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245897