Refactor AudioInputController and related interfaces.

content/browser/speech/speech_recognizer_impl.h

Index: content/browser/speech/speech_recognizer_impl.h
diff --git a/content/browser/speech/speech_recognizer_impl.h b/content/browser/speech/speech_recognizer_impl.h
index e0a632e907c9c871a4ee09b9a8e5ea5bb119959d..f28417143d6902e32d769ab6c096e692f8cf2804 100644
--- a/content/browser/speech/speech_recognizer_impl.h
+++ b/content/browser/speech/speech_recognizer_impl.h
@@ -32,6 +32,7 @@ class SpeechRecognitionEventListener;
 class CONTENT_EXPORT SpeechRecognizerImpl
     : public SpeechRecognizer,
       public media::AudioInputController::EventHandler,
+      public media::AudioInputController::SyncWriter,
       public NON_EXPORTED_BASE(SpeechRecognitionEngine::Delegate) {
  public:
   static const int kAudioSampleRate;
@@ -134,11 +135,16 @@ class CONTENT_EXPORT SpeechRecognizerImpl
   void OnCreated(media::AudioInputController* controller) override {}
   void OnError(media::AudioInputController* controller,
                media::AudioInputController::ErrorCode error_code) override;
-  void OnData(media::AudioInputController* controller,
-              const media::AudioBus* data) override;
   void OnLog(media::AudioInputController* controller,
              const std::string& message) override {}
 
+  // AudioInputController::SyncWriter methods.
+  void Write(const media::AudioBus* data,
+             double volume,
+             bool key_pressed,
+             uint32_t hardware_delay_bytes) override;
+  void Close() override;
+
   // SpeechRecognitionEngineDelegate methods.
   void OnSpeechRecognitionEngineResults(
       const SpeechRecognitionResults& results) override;