Render Core Animation plugins through WebKit's compositor rather than

webkit/plugins/npapi/webplugin_delegate_impl.h

 // Copyright (c) 2011 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 WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_DELEGATE_IMPL_H_
 #define WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_DELEGATE_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 457 matching lines @@
   NP_CGContext np_cg_context_;
 #endif
 #ifndef NP_NO_QUICKDRAW
   NP_Port qd_port_;
   scoped_ptr<QuickDrawDrawingManager> qd_manager_;
   base::TimeTicks fast_path_enable_tick_;
 #endif
 
   CALayer* layer_;  // Used for CA drawing mode. Weak, retained by plug-in.
   WebPluginAcceleratedSurface* surface_;  // Weak ref.
+  bool composited_;  // If CA plugin, whether it's rendering via compositor.
   CARenderer* renderer_;  // Renders layer_ to surface_.
   scoped_ptr<base::RepeatingTimer<WebPluginDelegateImpl> > redraw_timer_;
 
   // The upper-left corner of the web content area in screen coordinates,
   // relative to an upper-left (0,0).
   gfx::Point content_area_origin_;
 
   bool containing_window_has_focus_;
   bool initial_window_focus_;
   bool container_is_visible_;
@@ skipping 63 matching lines @@
   // True if NPP_New did not return an error.
   bool creation_succeeded_;
 
   DISALLOW_COPY_AND_ASSIGN(WebPluginDelegateImpl);
 };
 
 }  // namespace npapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_DELEGATE_IMPL_H_