Help to land 7969005 on behalf of solenberg. The review and try is done in 7969005.

- Add ability to VoE to send Absolute Sender Time header extension.
- Refactor handling of RTP header extensions in VoE to work the same as in ViE.
- Add API to enable receiving Absolute Sender Time in VoE.

This is part of the work to include audio packets in bandwidth estimation, for
better accuracy in estimates.

BUG=
TBR=solenberg@webrtc.org,henrikg@webrtc.org,stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9509004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5654 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h

@@ -295,14 +295,6 @@ class ModuleRtpRtcpImpl : public RtpRtcp {
   // Get payload type for Redundant Audio Data RFC 2198.
   virtual int32_t SendREDPayloadType(int8_t& payload_type) const OVERRIDE;
 
-  // Set status and id for header-extension-for-audio-level-indication.
-  virtual int32_t SetRTPAudioLevelIndicationStatus(
-      const bool enable, const uint8_t id) OVERRIDE;
-
-  // Get status and id for header-extension-for-audio-level-indication.
-  virtual int32_t GetRTPAudioLevelIndicationStatus(
-      bool& enable, uint8_t& id) const OVERRIDE;
-
   // Store the audio level in d_bov for header-extension-for-audio-level-
   // indication.
   virtual int32_t SetAudioLevel(const uint8_t level_d_bov) OVERRIDE;