Switch browser side audio capture path to use base time primitives.

media/base/audio_capturer_source.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_BASE_AUDIO_CAPTURER_SOURCE_H_
 #define MEDIA_BASE_AUDIO_CAPTURER_SOURCE_H_
 
 #include <string>
 #include <vector>
 #include "base/memory/ref_counted.h"
@@ skipping 13 matching lines @@
    public:
     // Signals that audio recording has been started.  Called asynchronously
     // after Start() has completed. If Start() encounters problems before this
     // callback can be made, OnCaptureError will be called instead.
     // This callback is provided for sources such as local audio sources that
     // require asynchronous initialization so not all sources will support this
     // notification.
     virtual void OnCaptureStarted() {}
 
     // Callback to deliver the captured data from the OS.
-    // TODO(chcunningham): Update delay argument to use frames instead of
-    // milliseconds to prevent loss of precision. See http://crbug.com/587291.
+    // TODO(chcunningham): Update delay argument to use base::TimeDelta instead
+    // of milliseconds to prevent precision loss. See http://crbug.com/587291.
     virtual void Capture(const AudioBus* audio_source,
                          int audio_delay_milliseconds,
                          double volume,
                          bool key_pressed) = 0;
 
     // Signals an error has occurred.
     virtual void OnCaptureError(const std::string& message) = 0;
 
    protected:
     virtual ~CaptureCallback() {}
@@ skipping 23 matching lines @@
   virtual void SetAutomaticGainControl(bool enable) = 0;
 
  protected:
   friend class base::RefCountedThreadSafe<AudioCapturerSource>;
   virtual ~AudioCapturerSource() {}
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_CAPTURER_SOURCE_H_