Fix <webview> with software compositor

content/renderer/browser_plugin/browser_plugin_compositing_helper.h

 // Copyright (c) 2013 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  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_COMPOSITING_HELPER_H_
 #define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_COMPOSITING_HELPER_H_
 
 #include <string>
+#include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 #include "gpu/command_buffer/common/mailbox.h"
 #include "ui/gfx/size.h"
 
 namespace base {
 class SharedMemory;
 }
@@ skipping 66 matching lines @@
   void MailboxReleased(SwapBuffersInfo mailbox,
                        unsigned sync_point,
                        bool lost_resource);
   int instance_id_;
   int host_routing_id_;
   int last_route_id_;
   uint32 last_output_surface_id_;
   int last_host_id_;
   bool last_mailbox_valid_;
   bool ack_pending_;
+  bool software_ack_pending_;
+  std::vector<unsigned> unacked_software_frames_;
 
   gfx::Size buffer_size_;
 
   scoped_refptr<cc::SolidColorLayer> background_layer_;
   scoped_refptr<cc::TextureLayer> texture_layer_;
   scoped_refptr<cc::DelegatedRendererLayer> delegated_layer_;
   scoped_ptr<WebKit::WebLayer> web_layer_;
   WebKit::WebPluginContainer* container_;
 
   scoped_refptr<BrowserPluginManager> browser_plugin_manager_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_COMPOSITING_HELPER_H_