Linux: server side backing stores

chrome/browser/renderer_host/render_widget_host_view.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_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_
 
 #include "base/gfx/native_widget_types.h"
 #include "base/shared_memory.h"
 #include "webkit/glue/webplugin.h"
 
 namespace gfx {
 class Rect;
 class Size;
 }
 namespace IPC {
 class Message;
 }
 
+class BackingStore;
 class RenderProcessHost;
 class RenderWidgetHost;
 class WebCursor;
 
 // RenderWidgetHostView is an interface implemented by an object that acts as
 // the "View" portion of a RenderWidgetHost. The RenderWidgetHost and its
 // associated RenderProcessHost own the "Model" in this case which is the
 // child renderer process. The View is responsible for receiving events from
 // the surrounding environment and passing them to the RenderWidgetHost, and
 // for actually displaying the content of the RenderWidgetHost when it
@@ skipping 72 matching lines @@
   // Notifies the View that the renderer has ceased to exist.
   virtual void RenderViewGone() = 0;
 
   // Tells the View to destroy itself.
   virtual void Destroy() = 0;
 
   // Tells the View that the tooltip text for the current mouse position over
   // the page has changed.
   virtual void SetTooltipText(const std::wstring& tooltip_text) = 0;
 
+  // Allocate a backing store for this view
+  virtual BackingStore* AllocBackingStore(const gfx::Size& size) = 0;
+
  protected:
   // Interface class only, do not construct.
   RenderWidgetHostView() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostView);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_