Revert 255166 "Cast: Using a min filter to compute time offset"

Revert 255166 "Cast: Using a min filter to compute time offset"

> Cast: Using a min filter to compute time offset
> 
> Modifying the time offset filter to take to minimum of the first 10 values. 
> Once ten offset values were seen, the value will be constant for the entire session. 
> This may be justified by the fact we are seeking the offset between sender and
>  receiver without accounting the network jitter.
> 
> Review URL: https://codereview.chromium.org/186043003

TBR=mikhal@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=255173

[dvh, 2014-03-05 23:26:32]

Committed patchset #1 manually as r255173 (tree was closed).