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/interface/rtp_rtcp.h

@@ -670,25 +670,6 @@ class RtpRtcp : public Module {
      virtual int32_t SendREDPayloadType(
          int8_t& payloadType) const = 0;
 
-     /*
-     * Set status and ID for header-extension-for-audio-level-indication.
-     * See http://tools.ietf.org/html/rfc6464 for more details.
-     *
-     * return -1 on failure else 0
-     */
-     virtual int32_t SetRTPAudioLevelIndicationStatus(
-         const bool enable,
-         const uint8_t ID) = 0;
-
-     /*
-     * Get status and ID for header-extension-for-audio-level-indication.
-     *
-     * return -1 on failure else 0
-     */
-     virtual int32_t GetRTPAudioLevelIndicationStatus(
-         bool& enable,
-         uint8_t& ID) const = 0;
-
      /*
      * Store the audio level in dBov for header-extension-for-audio-level-
      * indication.