GitLab

The FaviconService is not a CancelableRequestProvider anymore.
Fixed external classes that were incorrectly using "Handle", a type inherited from CancelableRequestProvider.

BUG=359599

Review URL: https://codereview.chromium.org/230873003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@263063 0039d316-1c4b-4281-b951-d872f2087c98