Update suppressions for WebKit -> blink namespace change

BUG=295096

Review URL: https://codereview.chromium.org/59113011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233660 0039d316-1c4b-4281-b951-d872f2087c98
Fix return values for ResourceHandler::OnResponseCompleted.

Unlike the other methods, OnResponseCompleted returns false to defer, not
cancel.  Don't indefinitely (well, until the route is destroyed and the RDH
cleans up) defer requests in some error conditions.

BUG=none

Review URL: https://codereview.chromium.org/60543002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233661 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233660
SVN changes up to revision 233661