Adds the UserInputMonitor implementation for Mac.

media/audio/audio_input_controller.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_
 #define MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_
 
 #include <string>
 #include "base/atomicops.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "base/timer/timer.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_manager_base.h"
-#include "media/base/user_input_monitor.h"
 
 // An AudioInputController controls an AudioInputStream and records data
 // from this input stream. The two main methods are Record() and Close() and
 // they are both executed on the audio thread which is injected by the two
 // alternative factory methods, Create() or CreateLowLatency().
 //
 // All public methods of AudioInputController are non-blocking.
 //
 // Here is a state diagram for the AudioInputController:
 //
@@ skipping 36 matching lines @@
 // Closure::Run() <-----------------.
 // (closure-task)
 //
 // The audio thread itself is owned by the AudioManager that the
 // AudioInputController holds a reference to.  When performing tasks on the
 // audio thread, the controller must not add or release references to the
 // AudioManager or itself (since it in turn holds a reference to the manager).
 //
 namespace media {
 
+class UserInputMonitor;
+
 class MEDIA_EXPORT AudioInputController
     : public base::RefCountedThreadSafe<AudioInputController>,
-      public AudioInputStream::AudioInputCallback,
-      public UserInputMonitor::KeyStrokeListener {
+      public AudioInputStream::AudioInputCallback {
  public:
   // An event handler that receives events from the AudioInputController. The
   // following methods are all called on the audio thread.
   class MEDIA_EXPORT EventHandler {
    public:
     virtual void OnCreated(AudioInputController* controller) = 0;
     virtual void OnRecording(AudioInputController* controller) = 0;
     virtual void OnError(AudioInputController* controller) = 0;
     virtual void OnData(AudioInputController* controller, const uint8* data,
                         uint32 size) = 0;
@@ skipping 106 matching lines @@
 
   // AudioInputCallback implementation. Threading details depends on the
   // device-specific implementation.
   virtual void OnData(AudioInputStream* stream, const uint8* src, uint32 size,
                       uint32 hardware_delay_bytes, double volume) OVERRIDE;
   virtual void OnClose(AudioInputStream* stream) OVERRIDE;
   virtual void OnError(AudioInputStream* stream) OVERRIDE;
 
   bool LowLatencyMode() const { return sync_writer_ != NULL; }
 
-  // Impl of KeyStrokeListener.
-  virtual void OnKeyStroke() OVERRIDE;
-
  protected:
   friend class base::RefCountedThreadSafe<AudioInputController>;
 
   // Internal state of the source.
   enum State {
     kEmpty,
     kCreated,
     kRecording,
     kClosed,
     kError
@@ skipping 61 matching lines @@
 
   // SyncWriter is used only in low-latency mode for synchronous writing.
   SyncWriter* sync_writer_;
 
   static Factory* factory_;
 
   double max_volume_;
 
   UserInputMonitor* user_input_monitor_;
 
-  // True if any key has been pressed after the last OnData call.
-  bool key_pressed_;
+  size_t prev_key_down_count_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioInputController);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_