Audio output debug recording.

content/browser/media/capture/web_contents_audio_muter.cc

 // Copyright 2014 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.
 
 #include "content/browser/media/capture/web_contents_audio_muter.h"
 
 #include <memory>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 30 matching lines @@
   // AudioOutputStream implementation.
   bool Open() override { return true; }
   void Start(AudioSourceCallback* callback) override {
     worker_.Start(base::Bind(&AudioDiscarder::FetchAudioData,
                              base::Unretained(this),
                              callback));
   }
   void Stop() override { worker_.Stop(); }
   void SetVolume(double volume) override {}
   void GetVolume(double* volume) override { *volume = 0; }
+  void EnableDebugRecording(const base::FilePath& file_name) override {}
+  void DisableDebugRecording() override {}
   void Close() override { delete this; }
 
  private:
   ~AudioDiscarder() override {}
 
   void FetchAudioData(AudioSourceCallback* callback) {
     callback->OnMoreData(base::TimeDelta(), base::TimeTicks::Now(), 0,
                          audio_bus_.get());
   }
 
@@ skipping 95 matching lines @@
     return;
   is_muting_ = false;
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&AudioMirroringManager::StopMirroring,
                  base::Unretained(AudioMirroringManager::GetInstance()),
                  base::RetainedRef(destination_)));
 }
 
 }  // namespace content