Rename Start/Stop in Video{Send,Receive}Streams.

Rename {Start,Stop}{Sending,Receving} to Start/Stop. StartSending
provides no extra information in the context of a VideoSendStream, as
what it does is to send.

R=mflodman@webrtc.org
BUG=3227

Review URL: https://webrtc-codereview.appspot.com/12329005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5970 4adac7df-926f-26a2-2b94-8c16560cd09d
Remove TraceCallback use from Call.

Non-global logging isn't supported, and having a per-call logging
dispatch seems over-eager and adds more complexity than it's worth. The
current implementation is racy on initialization due to missing atomics
support. Besides, logging support should be separate from use of Call.

R=mflodman@webrtc.org
BUG=3250,3157

Review URL: https://webrtc-codereview.appspot.com/12329006

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5971 4adac7df-926f-26a2-2b94-8c16560cd09d
Fix the Android compilation (better structure for NetEq test libs)

This change should make the Android targets compile again. The reason
for the failure was a highly dubious structure in the gypi files. With
this fix, the structure is somewhat cleaner. Still room for improvement.

BUG=3254
TBR=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/15369004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5972 4adac7df-926f-26a2-2b94-8c16560cd09d