Now that we're using real override/final and not also using
virtual on the same methods, this transitional blacklist
can go away.

R=agable, dcheng

Review URL: https://codereview.chromium.org/1564403003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@298201 0039d316-1c4b-4281-b951-d872f2087c98