Enable audio streams to send padding.

webrtc/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 48 matching lines @@
   MOCK_CONST_METHOD0(MaxRtpPacketSize, size_t());
   MOCK_METHOD1(RegisterSendPayload, int32_t(const CodecInst& voice_codec));
   MOCK_METHOD1(RegisterSendPayload, int32_t(const VideoCodec& video_codec));
   MOCK_METHOD2(RegisterVideoSendPayload,
                void(int payload_type, const char* payload_name));
   MOCK_METHOD1(DeRegisterSendPayload, int32_t(int8_t payload_type));
   MOCK_METHOD2(RegisterSendRtpHeaderExtension,
                int32_t(RTPExtensionType type, uint8_t id));
   MOCK_METHOD1(DeregisterSendRtpHeaderExtension,
                int32_t(RTPExtensionType type));
+  MOCK_CONST_METHOD0(HasBweExtensions, bool());
   MOCK_CONST_METHOD0(StartTimestamp, uint32_t());
   MOCK_METHOD1(SetStartTimestamp, void(uint32_t timestamp));
   MOCK_CONST_METHOD0(SequenceNumber, uint16_t());
   MOCK_METHOD1(SetSequenceNumber, void(uint16_t seq));
   MOCK_METHOD1(SetRtpState, void(const RtpState& rtp_state));
   MOCK_METHOD1(SetRtxState, void(const RtpState& rtp_state));
   MOCK_CONST_METHOD0(GetRtpState, RtpState());
   MOCK_CONST_METHOD0(GetRtxState, RtpState());
   MOCK_CONST_METHOD0(SSRC, uint32_t());
   MOCK_METHOD1(SetSSRC, void(uint32_t ssrc));
@@ skipping 124 matching lines @@
   MOCK_CONST_METHOD0(GetSendChannelRtpStatisticsCallback,
                      StreamDataCountersCallback*(void));
   MOCK_METHOD1(SetVideoBitrateAllocation, void(const BitrateAllocation&));
   // Members.
   unsigned int remote_ssrc_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_MOCKS_MOCK_RTP_RTCP_H_