[Cross-Site Isolation] Migrate entire MediaStream verticals to be per-RenderFrame.

content/renderer/pepper/pepper_platform_audio_input.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 CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_AUDIO_INPUT_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_AUDIO_INPUT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 11 matching lines @@
 }
 
 namespace media {
 class AudioParameters;
 }
 
 namespace content {
 
 class PepperAudioInputHost;
 class PepperMediaDeviceManager;
-class RenderViewImpl;
 
 // PepperPlatformAudioInput is operated on two threads: the main thread (the
 // thread on which objects are created) and the I/O thread. All public methods,
 // except the destructor, must be called on the main thread. The notifications
 // to the users of this class (i.e. PepperAudioInputHost) are also sent on the
 // main thread. Internally, this class sends audio input IPC messages and
 // receives media::AudioInputIPCDelegate notifications on the I/O thread.
 
 class PepperPlatformAudioInput
     : public media::AudioInputIPCDelegate,
       public base::RefCountedThreadSafe<PepperPlatformAudioInput> {
  public:
   // Factory function, returns NULL on failure. StreamCreated() will be called
   // when the stream is created.
   static PepperPlatformAudioInput* Create(
-      const base::WeakPtr<RenderViewImpl>& render_view,
+      int render_frame_id,
       const std::string& device_id,
       const GURL& document_url,
       int sample_rate,
       int frames_per_buffer,
       PepperAudioInputHost* client);
 
   // Called on main thread.
   void StartCapture();
   void StopCapture();
   // Closes the stream. Make sure to call this before the object is destructed.
@@ skipping 10 matching lines @@
   virtual void OnIPCClosed() OVERRIDE;
 
  protected:
   virtual ~PepperPlatformAudioInput();
 
  private:
   friend class base::RefCountedThreadSafe<PepperPlatformAudioInput>;
 
   PepperPlatformAudioInput();
 
-  bool Initialize(const base::WeakPtr<RenderViewImpl>& render_view,
+  bool Initialize(int render_frame_id,
                   const std::string& device_id,
                   const GURL& document_url,
                   int sample_rate,
                   int frames_per_buffer,
                   PepperAudioInputHost* client);
 
   // I/O thread backends to above functions.
   void InitializeOnIOThread(int session_id);
   void StartCaptureOnIOThread();
   void StopCaptureOnIOThread();
   void ShutDownOnIOThread();
 
   void OnDeviceOpened(int request_id, bool succeeded, const std::string& label);
   void CloseDevice();
   void NotifyStreamCreationFailed();
 
+  // Can return NULL if the RenderFrame referenced by |render_frame_id_| has
+  // gone away.
   PepperMediaDeviceManager* GetMediaDeviceManager();
 
   // The client to notify when the stream is created. THIS MUST ONLY BE
   // ACCESSED ON THE MAIN THREAD.
   PepperAudioInputHost* client_;
 
   // Used to send/receive IPC. THIS MUST ONLY BE ACCESSED ON THE
   // I/O THREAD.
   scoped_ptr<media::AudioInputIPC> ipc_;
 
   scoped_refptr<base::MessageLoopProxy> main_message_loop_proxy_;
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
 
-  // THIS MUST ONLY BE ACCESSED ON THE MAIN THREAD.
-  base::WeakPtr<RenderViewImpl> render_view_;
+  // The frame containing the Pepper widget.
+  int render_frame_id_;
 
   // The unique ID to identify the opened device. THIS MUST ONLY BE ACCESSED ON
   // THE MAIN THREAD.
   std::string label_;
 
   // Initialized on the main thread and accessed on the I/O thread afterwards.
   media::AudioParameters params_;
 
   // Whether we have tried to create an audio stream. THIS MUST ONLY BE ACCESSED
   // ON THE I/O THREAD.
   bool create_stream_sent_;
 
   // Whether we have a pending request to open a device. We have to make sure
   // there isn't any pending request before this object goes away.
   // THIS MUST ONLY BE ACCESSED ON THE MAIN THREAD.
   bool pending_open_device_;
   // THIS MUST ONLY BE ACCESSED ON THE MAIN THREAD.
   int pending_open_device_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPlatformAudioInput);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_AUDIO_INPUT_H_