Mark tests for rebaseline since ForceCompositingMode is on for them.

These tests have pixel differences in composited mode and are not ref
tests so we can rebaseline them.

R=enne@chromium.org
BUG=364946

Review URL: https://codereview.chromium.org/246893008

git-svn-id: svn://svn.chromium.org/blink/trunk@172163 bbb929c8-8fbe-4397-9dbb-9b2b20218538