Linux: server side backing stores

chrome/browser/renderer_host/render_widget_host.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_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_H_
 
 #include <vector>
 
 #include "base/gfx/size.h"
@@ skipping 156 matching lines @@
 
   // Indicates if the page has finished loading.
   void SetIsLoading(bool is_loading);
 
   // Get access to the widget's backing store.  If a resize is in progress,
   // then the current size of the backing store may be less than the size of
   // the widget's view.  This method returns NULL if the backing store could
   // not be created.
   BackingStore* GetBackingStore();
 
+  // Allocate a new backing store of the given size. Returns NULL on failure
+  // (for example, if we don't currently have a RenderWidgetHostView.)
+  BackingStore* AllocBackingStore(const gfx::Size& size);
+
   // Checks to see if we can give up focus to this widget through a JS call.
   virtual bool CanBlur() const { return true; }
 
   // Starts a hang monitor timeout. If there's already a hang monitor timeout
   // the new one will only fire if it has a shorter delay than the time
   // left on the existing timeouts.
   void StartHangMonitorTimeout(base::TimeDelta delay);
 
   // Restart the active hang monitor timeout. Clears all existing timeouts and
   // starts with a new one.  This can be because the renderer has become
@@ skipping 156 matching lines @@
   bool view_being_painted_;
 
   // Used for UMA histogram logging to measure the time for a repaint view
   // operation to finish.
   base::TimeTicks repaint_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_H_