Make RenderFrame(Host) own a RenderWidget(Host).

content/browser/frame_host/frame_tree.cc

 // 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.
 
 #include "content/browser/frame_host/frame_tree.h"
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 168 matching lines @@
     SiteInstance* site_instance) {
   // Create the swapped out RVH for the new SiteInstance. This will create
   // a top-level swapped out RFH as well, which will then be wrapped by a
   // RenderFrameProxyHost.
   if (!source->IsMainFrame()) {
     RenderViewHostImpl* render_view_host =
         source->frame_tree()->GetRenderViewHost(site_instance);
     if (!render_view_host) {
       root()->render_manager()->CreateRenderFrame(site_instance,
                                                   MSG_ROUTING_NONE,
-                                                  true,
-                                                  false,
-                                                  true);
+                                                  SWAPPED_OUT | HIDDEN);
     }
   }
 
   scoped_refptr<SiteInstance> instance(site_instance);
   ForEach(base::Bind(&CreateProxyForSiteInstance, source, instance));
 }
 
 void FrameTree::ResetForMainFrameSwap() {
   root_->ResetForNewProcess();
   focused_frame_tree_node_id_ = -1;
@@ skipping 120 matching lines @@
         rvh->Shutdown();
         render_view_host_pending_shutdown_map_.erase(multi_iter);
       }
       break;
     }
     CHECK(render_view_host_found);
   }
 }
 
 }  // namespace content