Let the browser handle external navigations from DevTools.

BUG=180555


Review URL: https://chromiumcodereview.appspot.com/12531004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@186793 0039d316-1c4b-4281-b951-d872f2087c98
void RenderViewImpl::DidCommitCompositorFrame() {
  RenderWidget::DidCommitCompositorFrame();
  FOR_EACH_OBSERVER(RenderViewObserver, observers_, DidCommitCompositorFrame());
}

void RenderViewImpl::DidCommitCompositorFrame() {
  RenderWidget::DidCommitCompositorFrame();
  FOR_EACH_OBSERVER(RenderViewObserver, observers_, DidCommitCompositorFrame());
}
