Shutdown RenderWidgetHost owned by RenderFrameHost when destroying the RenderFrameHost.

content/browser/frame_host/render_frame_host_impl.h

 // Copyright 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_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 605 matching lines @@
   // ExecuteJavaScript and their corresponding callbacks.
   std::map<int, JavaScriptResultCallback> javascript_callbacks_;
   std::map<uint64, VisualStateCallback> visual_state_callbacks_;
 
   // RenderFrameHosts that need management of the rendering and input events
   // for their frame subtrees require RenderWidgetHosts. This typically
   // means frames that are rendered in different processes from their parent
   // frames.
   // TODO(kenrb): Later this will also be used on the top-level frame, when
   // RenderFrameHost owns its RenderViewHost.
-  scoped_ptr<RenderWidgetHostImpl> render_widget_host_;
+  RenderWidgetHostImpl* render_widget_host_;
 
   int routing_id_;
 
   // The current state of this RenderFrameHost.
   RenderFrameHostImplState rfh_state_;
 
   // Tracks whether the RenderFrame for this RenderFrameHost has been created in
   // the renderer process.  Currently only used for subframes.
   // TODO(creis): Use this for main frames as well when RVH goes away.
   bool render_frame_created_;
@@ skipping 85 matching lines @@
 
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_