Make MediaInternalsUI talk to MediaInternals.

chrome/browser/ui/webui/media_internals_ui.h

 // Copyright (c) 2011 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 CHROME_BROWSER_UI_WEBUI_MEDIA_INTERNALS_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_MEDIA_INTERNALS_UI_H_
 #pragma once
 
 #include "chrome/browser/ui/webui/chrome_web_ui.h"
 

[scherkus (not reviewing), 2011/06/29 01:03:07]

a/z ordering for includes

[Scott Franklin, 2011/06/29 17:35:23]

Done.

+#include "base/memory/ref_counted.h"
+#include "chrome/browser/media/media_internals_observer.h"
+
+class MediaInternalsUI;

[scherkus (not reviewing), 2011/06/29 01:03:07]

a/z ordering

[Scott Franklin, 2011/06/29 17:35:23]

Done.

+class IOThread;
+
+class MediaInternalsProxy
+    : public MediaInternalsObserver,
+      public base::RefCountedThreadSafe<MediaInternalsProxy> {
+ public:
+  // Methods for MediaInternalsUI. Called on UI thread.
+  MediaInternalsProxy();
+  void SetUI(MediaInternalsUI* ui);
+  void RemoveUI();
+  void GetEverything();
+
+  // MediaInternalsObserver implementation. Called on IO thread.
+  virtual void OnUpdate(const string16& update);
+
+ private:
+  friend class base::RefCountedThreadSafe<MediaInternalsProxy>;
+  virtual ~MediaInternalsProxy();
+
+  void ObserveMediaInternalsOnIOThread();
+  void StopObservingMediaInternalsOnIOThread();
+  void GetEverythingOnIOThread();
+  void UpdateUIOnUIThread(const string16& update);
+
+  MediaInternalsUI* ui_;
+  IOThread* io_thread_;
+};
+
 // The implementation for the chrome://media-internals page.
 class MediaInternalsUI : public ChromeWebUI {
  public:
   explicit MediaInternalsUI(TabContents* contents);
+  virtual ~MediaInternalsUI();
+
+  virtual void OnWebUISend(const GURL& source_url,
+                           const std::string& name,
+                           const ListValue& args) OVERRIDE;
+
+  virtual void OnUpdate(const string16& update);
 
  private:
+  scoped_refptr<MediaInternalsProxy> proxy_;
+
   DISALLOW_COPY_AND_ASSIGN(MediaInternalsUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_INTERNALS_UI_H_