Revert of Remove ignored return code from modules.

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 231 matching lines @@
   MOCK_METHOD2(SetFecParameters,
       int32_t(const FecProtectionParams* delta_params,
               const FecProtectionParams* key_params));
   MOCK_METHOD1(SetKeyFrameRequestMethod,
       int32_t(const KeyFrameRequestMethod method));
   MOCK_METHOD0(RequestKeyFrame,
       int32_t());
   MOCK_METHOD0(TimeUntilNextProcess,
         int64_t());
   MOCK_METHOD0(Process,
-        void());
+        int32_t());
   MOCK_METHOD1(RegisterSendFrameCountObserver,
       void(FrameCountObserver*));
   MOCK_CONST_METHOD0(GetSendFrameCountObserver,
       FrameCountObserver*(void));
   MOCK_METHOD1(RegisterSendChannelRtpStatisticsCallback,
       void(StreamDataCountersCallback*));
   MOCK_CONST_METHOD0(GetSendChannelRtpStatisticsCallback,
       StreamDataCountersCallback*(void));
   // Members.
   unsigned int remote_ssrc_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_MOCKS_MOCK_RTP_RTCP_H_