Allow browser to handle all WebUI navigations.

BUG=113496
TEST="Google Dashboard" link in Sync settings loads in new process.


Review URL: http://codereview.chromium.org/9663045

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@126949 0039d316-1c4b-4281-b951-d872f2087c98
void MockRenderThread::OnMsgCreateWidget(int opener_id,
                                         WebKit::WebPopupType popup_type,
                                         int* route_id,
                                         int* surface_id) {
  opener_id_ = opener_id;
  *route_id = routing_id_;
   *surface_id = surface_id_;
 }

void MockRenderThread::OnMsgCreateWidget(int opener_id,
                                         WebKit::WebPopupType popup_type,
                                         int* route_id,
                                         int* surface_id) {
  opener_id_ = opener_id;
  *route_id = routing_id_;
   *surface_id = surface_id_;
 }
