Modified GetMatchToPrefetch() to return a valid match for prefetching even when hide_verbatim flag is turned off.

Details (repeating our email conversation) : This change is for re-implementation of Chrome Instant (Design doc: https://goto.google.com/fdgbe), in which the Suggest server tells Chrome which search suggestion to prefetch and then Chrome uses the hint details to prefetch the query results. We only prerender the top match marked for prefetching. But this doesn't work because of how Chrome deals with verbatim matches. So, we initially proposed that we require the search to be the top match, except for the cases where hide verbatim applied and the verbatim match is hidden. This works well but unfortunately, it seems like hide verbatim won't work without further UI changes in the omnibox. Until we figure out a way to hide the top verbatim match, we want to continue doing the same even with the hide verbatim turned off.

In this CL, I made changes to obey the prefetch hint if the search is the top match, unless it is only being outranked by a verbatim suggestion match.

BUG=269186
TEST=none

Review URL: https://codereview.chromium.org/69703002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240747 0039d316-1c4b-4281-b951-d872f2087c98
Plumb AudioLogs into AudioOutputDispatcherImpl.  Identify listings.

Adds plumbing for streams to show up in chrome://media-internals as
well as have them identified since the Controller and Stream pages
are so similar.

BUG=260005
TEST=Streams show up properly labeled.

Review URL: https://codereview.chromium.org/104983006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240748 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240747
SVN changes up to revision 240748