Revert of Revert of Cast: Log playout delay from receiver

Revert of Revert of Cast: Log playout delay from receiver (https://codereview.chromium.org/401273002/)

Reason for revert:
This revert wouldn't solve the flakiness. The fix for flakiness is in CQ now. Reverting this.


Original issue's description:
> Revert of Cast: Log playout delay from receiver (https://codereview.chromium.org/401213002/)
> 
> Reason for revert:
> This patch seems to break CastStreamingApiTestWithPixelOutput.EndToEnd.
> 
> http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests%20%28dbg%29%281%29/builds/32598/steps/browser_tests/logs/EndToEnd
> 
> Original issue's description:
> > Cast: Log playout delay from receiver
> > 
> > The last refactoring in RTCP handling dropped the playout delay from
> > receiver. This change adds it back.
> > 
> > TBR=miu
> > BUG=393042
> > 
> > Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284395
> 
> TBR=miu@chromium.org,hclam@chromium.org
> NOTREECHECKS=true
> NOTRY=true
> BUG=393042
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284411

TBR=miu@chromium.org,dgozman@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=393042
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284462

[Alpha Left Google, 2014-07-21 18:10:35]

Created Revert of Revert of Cast: Log playout delay from receiver

[commit-bot: I haz the power, 2014-07-21 18:12:27]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/hclam@chromium.org/410443002/1

[commit-bot: I haz the power, 2014-07-21 18:14:28]

Change committed as 284462