GitLab

When on demand raster is not allowed, when tiles are OOM, checkerboard
or solid color quad should be produced rather than nothing.

Add a unittest for this exact same scenario.

BUG=402321

Review URL: https://codereview.chromium.org/468983002

Cr-Commit-Position: refs/heads/master@{#289480}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289480 0039d316-1c4b-4281-b951-d872f2087c98