Revert "Revert 186416"

This reverts commit a8fb8f44bc56943c45bd06034fc004e22ef5da85 and
fixes the bug related to the WebGL null object test.

BUG=178093
TBR=apatrick@chromium.org

Review URL: https://chromiumcodereview.appspot.com/12542009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@186573 0039d316-1c4b-4281-b951-d872f2087c98
23 files changed