Revert of Remove ignored return code from modules.

webrtc/modules/bitrate_controller/include/mock/mock_bitrate_controller.h

 /*
  *  Copyright (c) 2015 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 18 matching lines @@
  public:
   MOCK_METHOD0(CreateRtcpBandwidthObserver, RtcpBandwidthObserver*());
   MOCK_METHOD1(SetStartBitrate, void(int start_bitrate_bps));
   MOCK_METHOD2(SetMinMaxBitrate,
                void(int min_bitrate_bps, int max_bitrate_bps));
   MOCK_METHOD1(UpdateDelayBasedEstimate, void(uint32_t bitrate_bps));
   MOCK_METHOD1(SetEventLog, void(RtcEventLog* event_log));
   MOCK_CONST_METHOD1(AvailableBandwidth, bool(uint32_t* bandwidth));
   MOCK_METHOD1(SetReservedBitrate, void(uint32_t reserved_bitrate_bps));
 
-  MOCK_METHOD0(Process, void());
+  MOCK_METHOD0(Process, int());
   MOCK_METHOD0(TimeUntilNextProcess, int64_t());
 };
 }  // namespace test
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_BITRATE_CONTROLLER_INCLUDE_MOCK_MOCK_BITRATE_CONTROLLER_H_