Split out audio debug recording from RenderProcessHostImpl.

content/browser/media/audio_debug_controller.h

Index: content/browser/media/audio_debug_controller.h
diff --git a/content/browser/media/audio_debug_controller.h b/content/browser/media/audio_debug_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..06e9be94c75a7dbfba2ad4215131a42ea6ecce30
--- /dev/null
+++ b/content/browser/media/audio_debug_controller.h
@@ -0,0 +1,74 @@
+// Copyright 2015 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 CONTENT_BROWSER_MEDIA_AUDIO_DEBUG_CONTROLLER_H_
+#define CONTENT_BROWSER_MEDIA_AUDIO_DEBUG_CONTROLLER_H_
+
+#include <set>
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/threading/thread_checker.h"
+#include "content/common/media/audio_debug_recording.mojom.h"
+
+namespace base {
+
+template <typename T>
+struct DefaultSingletonTraits;
+
+class FilePath;
+
+}  // namespace base
+
+namespace content {
+
+class AudioDebugRecordingImpl;
+class AudioInputRendererHost;
+
+// Singleton factory used to create and manage new AudioDebugRecording service
+// instances for renderers.
+//
+// All functions must be called on the same thread.
+class AudioDebugController {
+ public:
+  static AudioDebugController* GetInstance();
+
+  // Factory method to create a new AudioDebugRecording service instance.
+  static void CreateService(
+      int render_host_id,
+      const scoped_refptr<AudioInputRendererHost>& audio_input_renderer_host,
+      mojo::InterfaceRequest<AudioDebugRecording> request);
+
+  // Enable/disable audio debug recordings for all renderers.
+  void EnableAudioDebugRecording(const base::FilePath& file);
+  void DisableAudioDebugRecording();
+
+  // Enable/disable audio debug recordings for a specific renderer.
+  void EnableAudioDebugRecordingForHost(int render_host_id,
+                                        const base::FilePath& file);
+  void DisableAudioDebugRecordingForHost(int render_host_id);
+
+ private:
+  AudioDebugController();
+  ~AudioDebugController();
+  friend struct base::DefaultSingletonTraits<AudioDebugController>;
+
+  void CreateServiceInternal(
+      int render_host_id,
+      const scoped_refptr<AudioInputRendererHost>& audio_input_renderer_host,
+      mojo::InterfaceRequest<AudioDebugRecording> request);
+
+  // Service disconnection callback.
+  void OnDisconnect(AudioDebugRecordingImpl* impl);
+
+  // Owns AudioDebugRecordingImpl.
+  std::set<AudioDebugRecordingImpl*> registered_impls_;
+  base::ThreadChecker thread_checker_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioDebugController);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MEDIA_AUDIO_DEBUG_CONTROLLER_H_