Remove ignored return code from modules.

webrtc/voice_engine/monitor_module.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 24 matching lines @@
     int32_t RegisterObserver(MonitorObserver& observer);
 
     int32_t DeRegisterObserver();
 
     MonitorModule();
 
     virtual ~MonitorModule();
 public: // module
  int64_t TimeUntilNextProcess() override;
 
- int32_t Process() override;
+ void Process() override;
 
 private:
     rtc::CriticalSection _callbackCritSect;
     MonitorObserver* _observerPtr GUARDED_BY(_callbackCritSect);
     int64_t _lastProcessTime;
 };
 
 }  // namespace voe
 
 }  // namespace webrtc
 
 #endif // VOICE_ENGINE_MONITOR_MODULE