Move VoiceEngineObserver into AudioSendStream so that we detect typing noises and return properly i…

webrtc/test/fake_voice_engine.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 117 matching lines @@
                                    int reportingThreshold,
                                    int penaltyDecay,
                                    int typeEventDelay = 0) override {
     return -1;
   }
   void EnableStereoChannelSwapping(bool enable) override {}
   bool IsStereoChannelSwappingEnabled() override { return false; }
 
   // VoEBase
   int RegisterVoiceEngineObserver(VoiceEngineObserver& observer) override {
-    return -1;
+    return 0;
   }
-  int DeRegisterVoiceEngineObserver() override { return -1; }
+  int DeRegisterVoiceEngineObserver() override { return 0; }
   int Init(AudioDeviceModule* external_adm = NULL,
            AudioProcessing* audioproc = NULL) override { return -1; }
   AudioProcessing* audio_processing() override { return nullptr; }
   int Terminate() override { return -1; }
   int CreateChannel() override { return -1; }
   int CreateChannel(const Config& config) override { return -1; }
   int DeleteChannel(int channel) override { return -1; }
   int StartReceive(int channel) override { return -1; }
   int StopReceive(int channel) override { return -1; }
   int StartPlayout(int channel) override { return -1; }
@@ skipping 344 matching lines @@
     return -1;
   }
   int GetOutputVolumePan(int channel, float& left, float& right) override {
     return -1;
   }
 };
 }  // namespace test
 }  // namespace webrtc
 
 #endif  // WEBRTC_AUDIO_FAKE_VOICE_ENGINE_H_