Simplifying VideoReceiver and JitterBuffer.

Removing frame_buffers_ array and dual-receiver mechanism. Also adding
some thread annotations to VCMJitterBuffer.

R=stefan@webrtc.org
BUG=4014

Review URL: https://webrtc-codereview.appspot.com/27239004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7735 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/video_coding/main/source/frame_buffer.h

@@ -61,10 +61,6 @@ class VCMFrameBuffer : public VCMEncodedFrame {
   int Tl0PicId() const;
   bool NonReference() const;
 
-  // Set counted status (as counted by JB or not)
-  void SetCountedFrame(bool frameCounted);
-  bool GetCountedFrame() const;
-
   // Increments a counter to keep track of the number of packets of this frame
   // which were NACKed before they arrived.
   void IncrementNackCount();
@@ -85,7 +81,6 @@ class VCMFrameBuffer : public VCMEncodedFrame {
   void SetState(VCMFrameBufferStateEnum state);  // Set state of frame
 
   VCMFrameBufferStateEnum    _state;         // Current state of the frame
-  bool                       _frameCounted;  // Was this frame counted by JB?
   VCMSessionInfo             _sessionInfo;
   uint16_t             _nackCount;
   int64_t              _latestPacketTimeMs;