Use inner HWND for accelerated rendering on windows

chrome/browser/renderer_host/render_widget_host_view_win.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #pragma once
 
 #include <atlbase.h>
 #include <atlapp.h>
@@ skipping 133 matching lines @@
   virtual gfx::Rect GetViewBounds() const;
   virtual void UpdateCursor(const WebCursor& cursor);
   virtual void SetIsLoading(bool is_loading);
   virtual void ImeUpdateTextInputState(WebKit::WebTextInputType type,
                                        const gfx::Rect& caret_rect);
   virtual void ImeCancelComposition();
   virtual void DidUpdateBackingStore(
       const gfx::Rect& scroll_rect, int scroll_dx, int scroll_dy,
       const std::vector<gfx::Rect>& copy_rects);
   virtual void RenderViewGone();
+  virtual void WillWmDestroy(); // called by TabContents before DestroyWindow
   virtual void WillDestroyRenderWidget(RenderWidgetHost* rwh);
   virtual void Destroy();
   virtual void SetTooltipText(const std::wstring& tooltip_text);
   virtual BackingStore* AllocBackingStore(const gfx::Size& size);
   virtual void SetBackground(const SkBitmap& background);
   virtual bool ContainsNativeView(gfx::NativeView native_view) const;
   virtual void SetVisuallyDeemphasized(bool deemphasized);
+
+  virtual gfx::PluginWindowHandle CreateCompositorHostWindow();
+  virtual void ShowCompositorHostWindow(bool show);
+
   virtual void OnAccessibilityNotifications(
       const std::vector<ViewHostMsg_AccessibilityNotification_Params>& params);
 
   // Implementation of NotificationObserver:
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   // Implementation of BrowserAccessibilityDelegate:
   virtual void SetAccessibilityFocus(int acc_obj_id);
@@ skipping 88 matching lines @@
 
   // Create an intermediate window between the given HWND and its parent.
   HWND ReparentWindow(HWND window);
 
   // Whether the window should be activated.
   bool IsActivatable() const;
 
   // The associated Model.
   RenderWidgetHost* render_widget_host_;
 
+  // When we are doing accelerated compositing
+  HWND compositor_host_window_;
+
   // The cursor for the page. This is passed up from the renderer.
   WebCursor current_cursor_;
 
   // Indicates if the page is loading.
   bool is_loading_;
 
   // true if we are currently tracking WM_MOUSEEXIT messages.
   bool track_mouse_leave_;
 
   // Wrapper class for IME input.
@@ skipping 64 matching lines @@
   // Stores the current text input type received by ImeUpdateTextInputState()
   // method.
   WebKit::WebTextInputType text_input_type_;
 
   ScopedVector<app::win::ScopedProp> props_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewWin);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_