Connecting webrtc-internals WebUI frontend with the backend

chrome/browser/ui/webui/media/webrtc_internals_message_handler.h

+// Copyright (c) 2013 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_WEBRTC_INTERNALS_MESSAGE_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_MEDIA_WEBRTC_INTERNALS_MESSAGE_HANDLER_H_
+
+#include "base/memory/ref_counted.h"
+#include "content/public/browser/web_ui_message_handler.h"
+
+class WebRTCInternalsProxy;
+
+// This class handles messages to and from WebRTCInternalsUI.
+// It delegates all its work to WebRTCInternalsProxy on the IO thread.
+class WebRTCInternalsMessageHandler : public content::WebUIMessageHandler {
+ public:
+  WebRTCInternalsMessageHandler();
+  virtual ~WebRTCInternalsMessageHandler();
+
+  // WebUIMessageHandler implementation.
+  virtual void RegisterMessages() OVERRIDE;
+
+  // WebRTCInternals message handler.
+  void OnUpdate(const string16& update);
+
+ private:
+  scoped_refptr<WebRTCInternalsProxy> proxy_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebRTCInternalsMessageHandler);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_WEBRTC_INTERNALS_MESSAGE_HANDLER_H_