Temporarily disable ASSERT in descendantDependentCompositingInputs()

This ASSERT is triggering in some print previous browser_tests. I'm disabling
it temporarily while I investigate.

R=adamk@chromium.org

Review URL: https://codereview.chromium.org/470653002

git-svn-id: svn://svn.chromium.org/blink/trunk@180189 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Make sure ElementsTreeOutline is correctly rendered when element's hasChildren state changes.

R=pfeldman,apavlov

Review URL: https://codereview.chromium.org/467233002

git-svn-id: svn://svn.chromium.org/blink/trunk@180190 bbb929c8-8fbe-4397-9dbb-9b2b20218538