Revert 255602 "Cast: Cap max receiver log size per rtcp packet t..."

Revert 255602 "Cast: Cap max receiver log size per rtcp packet t..."
Broke 
RtcpReceiverReportWithOversizedFrameLog and
RtcpReceiverReportWithTooManyLogFrames tests
> Cast: Cap max receiver log size per rtcp packet to 200 bytes.
> 
> This is a short term fix to hopefully reduce the effects of packets
> queueing up on the receiver side. Previously we try fill up the RTCP
> packet with as many receiver log as possible so we can have redundancy.
> The redundancy that has been observed was more than 30 per message, and
> we don't need this much redundancy. 200 is a good number where each
> log message will be sent with redundancy of around 2-3, without losing
> too many (< 1%) messages, assuming default rtcp interval settings.
> That's fine because we don't need the logs to be completely reliable.
> 
> 
> BUG=349265
> 
> Review URL: https://codereview.chromium.org/189423002

TBR=imcheng@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=255611

[mef, 2014-03-07 14:35:20]

Committed patchset #1 manually as r255611 (tree was closed).