Linux: server side backing stores

chrome/browser/renderer_host/render_widget_host_view_mac.h

 // Copyright (c) 2006-2008 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_MAC_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/time.h"
@@ skipping 60 matching lines @@
   virtual gfx::Rect GetViewBounds() const;
   virtual void UpdateCursor(const WebCursor& cursor);
   virtual void UpdateCursorIfOverSelf();
   virtual void SetIsLoading(bool is_loading);
   virtual void IMEUpdateStatus(int control, const gfx::Rect& caret_rect);
   virtual void DidPaintRect(const gfx::Rect& rect);
   virtual void DidScrollRect(const gfx::Rect& rect, int dx, int dy);
   virtual void RenderViewGone();
   virtual void Destroy();
   virtual void SetTooltipText(const std::wstring& tooltip_text);
+  virtual BackingStore* AllocBackingStore(const gfx::Size& size);
 
  private:
   // Shuts down the render_widget_host_.  This is a separate function so we can
   // invoke it from the message loop.
   void ShutdownHost();
 
   // Redraws the window asynchronously.
   void Redraw(const gfx::Rect& invalid_rect);
 
   // The associated view.
@@ skipping 18 matching lines @@
   // The time at which this view started displaying white pixels as a result of
   // not having anything to paint (empty backing store from renderer). This
   // value returns true for is_null() if we are not recording whiteout times.
   base::TimeTicks whiteout_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_