Remove ignored return code from modules.

webrtc/api/test/fakeaudiocapturemodule.h

 /*
  *  Copyright 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 38 matching lines @@
   // Returns the number of frames that have been successfully pulled by the
   // instance. Note that correctly detecting success can only be done if the
   // pulled frame was generated/pushed from a FakeAudioCaptureModule.
   int frames_received() const;
 
   // Following functions are inherited from webrtc::AudioDeviceModule.
   // Only functions called by PeerConnection are implemented, the rest do
   // nothing and return success. If a function is not expected to be called by
   // PeerConnection an assertion is triggered if it is in fact called.
   int64_t TimeUntilNextProcess() override;
-  int32_t Process() override;
+  void Process() override;
 
   int32_t ActiveAudioLayer(AudioLayer* audio_layer) const override;
 
   ErrorCode LastError() const override;
   int32_t RegisterEventObserver(
       webrtc::AudioDeviceObserver* event_callback) override;
 
   // Note: Calling this method from a callback may result in deadlock.
   int32_t RegisterAudioCallback(
       webrtc::AudioTransport* audio_callback) override;
@@ skipping 191 matching lines @@
 
   // Protects variables that are accessed from process_thread_ and
   // the main thread.
   rtc::CriticalSection crit_;
   // Protects |audio_callback_| that is accessed from process_thread_ and
   // the main thread.
   rtc::CriticalSection crit_callback_;
 };
 
 #endif  // WEBRTC_API_TEST_FAKEAUDIOCAPTUREMODULE_H_