A lot of plumbing to get render_frame_id to PrerenderManager::OnCreatingAudioStream. The goal is that PrerenderTracker (almost the last caller of the deprecated GetAssociatedRenderFrame) will keep track of RenderFrame IDs instead of RenderView IDs.

BUG=304341
R=miu@chromium.org, nasko@chromium.org

Review URL: https://codereview.chromium.org/106913004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246045 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246045