Remove ignored return code from modules.

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.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 17 matching lines @@
 
 class ModuleRtpRtcpImpl : public RtpRtcp {
  public:
   explicit ModuleRtpRtcpImpl(const RtpRtcp::Configuration& configuration);
 
   // Returns the number of milliseconds until the module want a worker thread to
   // call Process.
   int64_t TimeUntilNextProcess() override;
 
   // Process any pending tasks such as timeouts.
-  int32_t Process() override;
+  void Process() override;
 
   // Receiver part.
 
   // Called when we receive an RTCP packet.
   int32_t IncomingRtcpPacket(const uint8_t* incoming_packet,
                              size_t incoming_packet_length) override;
 
   void SetRemoteSSRC(uint32_t ssrc) override;
 
   // Sender part.
@@ skipping 331 matching lines @@
   PacketLossStats receive_loss_stats_;
 
   // The processed RTT from RtcpRttStats.
   rtc::scoped_ptr<CriticalSectionWrapper> critical_section_rtt_;
   int64_t rtt_ms_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_RTCP_IMPL_H_