GitLab

Revert of Update AudioRenderer API to fire changes in BufferingState. (https://codereview.chromium.org/284763002/)

Reason for revert:
Broke blink tests:
mediasource-redundant-seek.html
mediasource-seek-during-pending-seek.html

http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.6/builds/28147

Original issue's description:
> Update AudioRenderer API to fire changes in BufferingState.
> 
> As a result, Pipeline now handles prerolling and underflow/rebuffering
> by listening for BUFFERING_HAVE_NOTHING/ENOUGH callbacks. Preroll() is
> renamed StartPlayingFrom() and no longer accepts a completion callback.
> In this new model, AudioRenderers immediately enter and remain in
> the "playing" state and fire buffering state callbacks to let Pipeline
> know when to start/stop the clock.
> 
> BUG=144683
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=272465

TBR=acolwell@chromium.org,scherkus@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=144683

Review URL: https://codereview.chromium.org/291093013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272501 0039d316-1c4b-4281-b951-d872f2087c98