Progress towards fixing 77536

content/renderer/render_widget.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 CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 56 matching lines @@
   // 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 RenderWidget* Create(int32 opener_id,
                               RenderThreadBase* render_thread,
                               WebKit::WebPopupType popup_type);
 
   // Creates a WebWidget based on the popup type.
   static WebKit::WebWidget* CreateWebWidget(RenderWidget* render_widget);
 
+  // The compositing surface assigned by the RenderWidgetHost
+  // (or RenderViewHost). Will be gfx::kNullPluginWindow if not assigned yet,
+  // in which case we should not create any GPU command buffers with it.
+  gfx::PluginWindowHandle compositing_surface() const {
+    return compositing_surface_;
+  }
+
   // The routing ID assigned by the RenderProcess. Will be MSG_ROUTING_NONE if
   // not yet assigned a view ID, in which case, the process MUST NOT send
   // messages with this ID to the parent.
   int32 routing_id() const {
     return routing_id_;
   }
 
   // May return NULL when the window is closing.
   WebKit::WebWidget* webwidget() const { return webwidget_; }
   gfx::NativeViewId host_window() const { return host_window_; }
@@ skipping 50 matching lines @@
   // Initializes this view with the given opener.  CompleteInit must be called
   // later.
   void Init(int32 opener_id);
 
   // Called by Init and subclasses to perform initialization.
   void DoInit(int32 opener_id,
               WebKit::WebWidget* web_widget,
               IPC::SyncMessage* create_widget_message);
 
   // Finishes creation of a pending view started with Init.
-  void CompleteInit(gfx::NativeViewId parent);
+  void CompleteInit(gfx::NativeViewId parent,
+                    gfx::PluginWindowHandle compositing_surface);
 
   // Paints the given rectangular region of the WebWidget into canvas (a
   // shared memory segment returned by AllocPaintBuf on Windows). The caller
   // must ensure that the given rect fits within the bounds of the WebWidget.
   void PaintRect(const gfx::Rect& rect, const gfx::Point& canvas_origin,
                  skia::PlatformCanvas* canvas);
 
   // Paints a border at the given rect for debugging purposes.
   void PaintDebugBorder(const gfx::Rect& rect, skia::PlatformCanvas* canvas);
 
   void AnimationCallback();
   void AnimateIfNeeded();
   void CallDoDeferredUpdate();
   void DoDeferredUpdate();
   void DoDeferredClose();
   void DoDeferredSetWindowRect(const WebKit::WebRect& pos);
 
   // Set the background of the render widget to a bitmap. The bitmap will be
   // tiled in both directions if it isn't big enough to fill the area. This is
   // mainly intended to be used in conjuction with WebView::SetIsTransparent().
   virtual void SetBackground(const SkBitmap& bitmap);
 
   // RenderWidget IPC message handlers
   void OnClose();
-  void OnCreatingNewAck(gfx::NativeViewId parent);
+  void OnCreatingNewAck(gfx::NativeViewId parent,
+                        gfx::PluginWindowHandle compositing_surface);
   virtual void OnResize(const gfx::Size& new_size,
                         const gfx::Rect& resizer_rect);
   virtual void OnWasHidden();
   virtual void OnWasRestored(bool needs_repainting);
   void OnUpdateRectAck();
   void OnCreateVideoAck(int32 video_id);
   void OnUpdateVideoAck(int32 video_id);
   void OnRequestMoveAck();
   void OnHandleInputEvent(const IPC::Message& message);
   void OnMouseCaptureLost();
@@ skipping 177 matching lines @@
 
   scoped_ptr<IPC::Message> pending_input_event_ack_;
 
   // Indicates if the next sequence of Char events should be suppressed or not.
   bool suppress_next_char_events_;
 
   // Set to true if painting to the window is handled by the accelerated
   // compositor.
   bool is_accelerated_compositing_active_;
 
+  // Handle to a surface that is drawn to when accelerated compositing is
+  // active.
+  gfx::PluginWindowHandle compositing_surface_;
+
   base::Time animation_floor_time_;
   bool animation_update_pending_;
   bool animation_task_posted_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_