Eliminate functions from RenderViewImpl whose only job is to fire notifications.

      BUG=361761
TEST=no visible change

Review URL: https://codereview.chromium.org/248043002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@265812 0039d316-1c4b-4281-b951-d872f2087c98