Move chrome://media-internals to content. This allows us to hide implementation details from the pu…

content/browser/media/media_internals_proxy.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 CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_PROXY_H_
-#define CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_PROXY_H_
+#ifndef CONTENT_BROWSER_MEDIA_MEDIA_INTERNALS_PROXY_H_
+#define CONTENT_BROWSER_MEDIA_MEDIA_INTERNALS_PROXY_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner_helpers.h"
-#include "base/string16.h"
-#include "chrome/browser/media/media_internals_observer.h"
+#include "content/browser/media/media_internals.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "net/base/net_log.h"
 
-class IOThread;
-class MediaInternalsMessageHandler;
-
 namespace base {
 class ListValue;
 class Value;
 }
 
+namespace content {
+class MediaInternalsMessageHandler;
+
 // This class is a proxy between MediaInternals (on the IO thread) and
 // MediaInternalsMessageHandler (on the UI thread).
 // It is ref_counted to ensure that it completes all pending Tasks on both
 // threads before destruction.
 class MediaInternalsProxy
-    : public MediaInternalsObserver,
-      public base::RefCountedThreadSafe<
+    : public base::RefCountedThreadSafe<
           MediaInternalsProxy,
-          content::BrowserThread::DeleteOnUIThread>,
+          BrowserThread::DeleteOnUIThread>,
       public net::NetLog::ThreadSafeObserver,
-      public content::NotificationObserver {
+      public NotificationObserver {
  public:
   MediaInternalsProxy();
 
-  // content::NotificationObserver implementation.
+  // NotificationObserver implementation.
   virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
+                       const NotificationSource& source,
+                       const NotificationDetails& details) OVERRIDE;
 
   // Register a Handler and start receiving callbacks from MediaInternals.
   void Attach(MediaInternalsMessageHandler* handler);
 
   // Unregister the same and stop receiving callbacks.
   void Detach();
 
   // Have MediaInternals send all the data it has.
   void GetEverything();
 
-  // MediaInternalsObserver implementation. Called on the IO thread.
-  virtual void OnUpdate(const string16& update) OVERRIDE;
+  // MediaInternals callback. Called on the IO thread.
+  void OnUpdate(const string16& update);
 
   // net::NetLog::ThreadSafeObserver implementation. Callable from any thread:
   virtual void OnAddEntry(const net::NetLog::Entry& entry) OVERRIDE;
 
  private:
-  friend struct content::BrowserThread::DeleteOnThread<
-      content::BrowserThread::UI>;
+  friend struct BrowserThread::DeleteOnThread<BrowserThread::UI>;
   friend class base::DeleteHelper<MediaInternalsProxy>;
   virtual ~MediaInternalsProxy();
 
   // Build a dictionary mapping constant names to values.
   base::Value* GetConstants();
 
   void ObserveMediaInternalsOnIOThread();
   void StopObservingMediaInternalsOnIOThread();
   void GetEverythingOnIOThread();
   void UpdateUIOnUIThread(const string16& update);
 
   // Put |entry| on a list of events to be sent to the page.
   void AddNetEventOnUIThread(base::Value* entry);
 
   // Send all pending events to the page.
   void SendNetEventsOnUIThread();
 
   // Call a JavaScript function on the page. Takes ownership of |args|.
   void CallJavaScriptFunctionOnUIThread(const std::string& function,
                                         base::Value* args);
 
   MediaInternalsMessageHandler* handler_;
-  IOThread* io_thread_;
   scoped_ptr<base::ListValue> pending_net_updates_;
-  content::NotificationRegistrar registrar_;
+  NotificationRegistrar registrar_;
+  MediaInternals::UpdateCallback update_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaInternalsProxy);
 };
 
-#endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_PROXY_H_
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MEDIA_MEDIA_INTERNALS_PROXY_H_