Drop return value from RtpRtcp::IncomingRtcpPacket.

webrtc/modules/rtp_rtcp/include/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 89 matching lines @@
   };
 
   // Create a RTP/RTCP module object using the system clock.
   // |configuration|  - Configuration of the RTP/RTCP module.
   static RtpRtcp* CreateRtpRtcp(const RtpRtcp::Configuration& configuration);
 
   // **************************************************************************
   // Receiver functions
   // **************************************************************************
 
-  virtual int32_t IncomingRtcpPacket(const uint8_t* incoming_packet,
-                                     size_t incoming_packet_length) = 0;
+  virtual void IncomingRtcpPacket(const uint8_t* incoming_packet,
+                                  size_t incoming_packet_length) = 0;
 
   virtual void SetRemoteSSRC(uint32_t ssrc) = 0;
 
   // **************************************************************************
   // Sender
   // **************************************************************************
 
   // TODO(nisse): Deprecated. Kept temporarily, as an alias for the
   // new function which has slighly different semantics. Delete as
   // soon as known applications are updated.
@@ skipping 331 matching lines @@
   virtual int32_t SetKeyFrameRequestMethod(KeyFrameRequestMethod method) = 0;
 
   // Sends a request for a keyframe.
   // Returns -1 on failure else 0.
   virtual int32_t RequestKeyFrame() = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_INCLUDE_RTP_RTCP_H_