Revert of Make the compositing assert disabler for paint invalidation more targeted. (patchset #4 of https://codereview.chromium.org/506553004/)

Reason for revert:
This seems to be asserting in many PPAPI tests. For example:
http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=@ToT%20Blink&tests=OutOfProcessPPAPITest.FlashFullscreen&testType=browser_tests

Original issue's description:
> Make the compositing assert disabler for paint invalidation more targeted.
> 
> BUG=360286
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180997

TBR=abarth@chromium.org,chrishtr@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=360286

Review URL: https://codereview.chromium.org/516603003

git-svn-id: svn://svn.chromium.org/blink/trunk@181025 bbb929c8-8fbe-4397-9dbb-9b2b20218538