commit be37888b6d5d269dbd5385569dba15c0d70594f2
author deadbeef <deadbeef@webrtc.org> Fri Jul 17 17:30:44 2015
committer Commit bot <commit-bot@chromium.org> Fri Jul 17 17:30:53 2015
tree f8614829f4d022d385c715ee1ef39eaabbf0e754
parent b947f287a6c9e209256d279345f334752a5aaf1b

Fixing scenario where track is rejected and later un-rejected.

Added `RestartLocalTracks` and `RestartRemoteTracks` methods to
`MediaStreamHandlerContainer` which will redo the track handlers'
initial setup; most importantly, this will re-connect the
renderer/capturer/etc. to a channel which was destroyed and then
re-created.

Also added `AcceptRemoteTracks` method to MediaStreamSignaling, which
does the inverse of `RejectRemoteTracks`. Effectively this will notify
sinks that the track is live again, after previously being set to
`kEnded` when it was rejected.

BUG=webrtc:2136

Review URL: https://codereview.webrtc.org/1231613002

Cr-Commit-Position: refs/heads/master@{#9600}