Use RenderWidget(Host) for full screen

chrome/renderer/render_widget_fullscreen.h

+// Copyright (c) 2010 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_RENDERER_RENDER_WIDGET_FULLSCREEN_H_
+#define CHROME_RENDERER_RENDER_WIDGET_FULLSCREEN_H_
+
+#include "chrome/renderer/render_widget.h"
+
+#include "third_party/WebKit/WebKit/chromium/public/WebWidget.h"
+
+// TODO(boliu): Override non-supported methods with no-op? eg setWindowRect().
+class RenderWidgetFullscreen : public RenderWidget {
+ public:
+  // Creates a new RenderWidget.  The opener_id is the routing ID of the
+  // RenderView that this widget lives inside. The render_thread is any
+  // RenderThreadBase implementation, mostly commonly RenderThread::current().
+  static RenderWidgetFullscreen* Create(int32 opener_id,
+                                        RenderThreadBase* render_thread,
+                                        WebKit::WebPopupType popup_type);
+
+  static WebKit::WebWidget* CreateWebWidget(
+      RenderWidgetFullscreen* render_widget);
+
+  virtual void show(WebKit::WebNavigationPolicy);
+
+ protected:
+  RenderWidgetFullscreen(RenderThreadBase* render_thread,
+                         WebKit::WebPopupType popup_type);
+
+  void Init(int32 opener_id);
+};
+
+#endif  // CHROME_RENDERER_RENDER_WIDGET_FULLSCREEN_H_