Linux: server side backing stores

chrome/browser/renderer_host/render_widget_host_view_gtk.h

 // Copyright (c) 2006-2009 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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_
 
 #include <vector>
 
 #include "base/gfx/native_widget_types.h"
@@ skipping 29 matching lines @@
   void UpdateCursor(const WebCursor& cursor);
   void UpdateCursorIfOverSelf();
   void SetIsLoading(bool is_loading);
   void IMEUpdateStatus(int control, const gfx::Rect& caret_rect);
   void DidPaintRect(const gfx::Rect& rect);
   void DidScrollRect(
       const gfx::Rect& rect, int dx, int dy);
   void RenderViewGone();
   void Destroy();
   void SetTooltipText(const std::wstring& tooltip_text);
+  BackingStore* AllocBackingStore(const gfx::Size& size);
   // ---------------------------------------------------------------------------
 
   gfx::NativeView native_view() const { return view_; }
 
   void Paint(const gfx::Rect&);
 
  private:
   // The model object.
   RenderWidgetHost *const host_;
   // The native UI widget.
   gfx::NativeView view_;
 
   // The cursor for the page. This is passed up from the renderer.
   WebCursor current_cursor_;
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_