Support the Aec dump for the APM in chrome

content/renderer/media/webrtc_audio_capturer.h

Index: content/renderer/media/webrtc_audio_capturer.h
diff --git a/content/renderer/media/webrtc_audio_capturer.h b/content/renderer/media/webrtc_audio_capturer.h
index 7f198eab1f540caf38f80a4c34dd7457cbdec41e..6d20d6e041508e6a4bdf6faf862f9571c4a5f2fb 100644
--- a/content/renderer/media/webrtc_audio_capturer.h
+++ b/content/renderer/media/webrtc_audio_capturer.h
@@ -10,6 +10,7 @@
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
+#include "base/platform_file.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
@@ -108,11 +109,14 @@ class CONTENT_EXPORT WebRtcAudioCapturer
   void GetAudioProcessingParams(base::TimeDelta* delay, int* volume,
                                 bool* key_pressed);
 
-  // Use by the unittests to inject their own source to the capturer.
+  // Uses by the unittests to inject their own source to the capturer.

[Henrik Grunell, 2014/03/06 10:12:20]

"Used".

[no longer working on chromium, 2014/03/06 18:57:21]

Done.

   void SetCapturerSourceForTesting(
       const scoped_refptr<media::AudioCapturerSource>& source,
       media::AudioParameters params);
 
+  void StartAecDump(const base::PlatformFile& aec_dump_file);
+  void StopAecDump();
+
  protected:
   friend class base::RefCountedThreadSafe<WebRtcAudioCapturer>;
   virtual ~WebRtcAudioCapturer();
@@ -205,6 +209,10 @@ class CONTENT_EXPORT WebRtcAudioCapturer
   // of RenderThread.
   WebRtcAudioDeviceImpl* audio_device_;
 
+  // Used for start the Aec dump on the |audio_processor_|.

[Henrik Grunell, 2014/03/06 10:12:20]

"starting"

[no longer working on chromium, 2014/03/06 18:57:21]

Done.

+  // Accessed only on the main render thread.
+  base::PlatformFile aec_dump_file_;
+
   DISALLOW_COPY_AND_ASSIGN(WebRtcAudioCapturer);
 };