This adds in the ability for Chrome to generate windows with snapshots of all...

chrome/renderer/render_widget.h

 // Copyright (c) 2009 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_H_
 #define CHROME_RENDERER_RENDER_WIDGET_H_
 
 #include <vector>
 
+#include "app/surface/transport_dib.h"
 #include "base/basictypes.h"
 #include "base/ref_counted.h"
 #include "base/shared_memory.h"
 #include "chrome/renderer/paint_aggregator.h"
 #include "chrome/renderer/render_process.h"
 #include "gfx/native_widget_types.h"
 #include "gfx/point.h"
 #include "gfx/rect.h"
 #include "gfx/size.h"
 #include "ipc/ipc_channel.h"
 #include "skia/ext/platform_canvas.h"
-#include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebCompositionCommand.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebPopupType.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebRect.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebTextDirection.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebWidgetClient.h"
+#include "third_party/skia/include/core/SkBitmap.h"
 #include "webkit/glue/webcursor.h"
 
 class RenderThreadBase;
 struct ViewHostMsg_ShowPopup_Params;
 
 namespace WebKit {
 struct WebPopupMenuInfo;
 }
 
 namespace webkit_glue {
@@ skipping 116 matching lines @@
   void OnUpdateVideoAck(int32 video_id);
   void OnRequestMoveAck();
   void OnHandleInputEvent(const IPC::Message& message);
   void OnMouseCaptureLost();
   virtual void OnSetFocus(bool enable);
   void OnImeSetInputMode(bool is_active);
   void OnImeSetComposition(WebKit::WebCompositionCommand command,
                            int cursor_position,
                            int target_start, int target_end,
                            const string16& ime_string);
+  void OnMsgPaintAtSize(const TransportDIB::Handle& dib_id,
+                        const gfx::Size& desired_size);
   void OnMsgRepaint(const gfx::Size& size_to_paint);
   void OnSetTextDirection(WebKit::WebTextDirection direction);
 
   // Override point to notify derived classes that a paint has happened.
   // DidInitiatePaint happens when we've generated a new bitmap and sent it to
   // the browser. DidFlushPaint happens once we've received the ACK that the
   // screen has actually been updated.
   virtual void DidInitiatePaint() {}
   virtual void DidFlushPaint() {}
 
@@ skipping 146 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_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 #endif  // CHROME_RENDERER_RENDER_WIDGET_H_