Fix a long standing leak on cancellation of renderer-
initiated URLRequests.  ResourceDispatcher was not calling
peer->OnCompletedRequest on cancellation of async requests,
despite it being expected by WebURLLoaderImpl::Context
(The only ResourceLoaderBridge::Peer).

This shouldn't impact externally visible behavior at all,
other than fixing the leak, because once
WebURLLoaderImpl::Context::Cancel() is called, it will never
call back into WebURLLoaderImpl.

BUG=328092

Review URL: https://codereview.chromium.org/113893007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241291 0039d316-1c4b-4281-b951-d872f2087c98
[Mac] Uppercase new avatar bubble strings.

BUG=328992

Review URL: https://codereview.chromium.org/116743002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241292 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241291
SVN changes up to revision 241292