Move SessionStorageNamespace entirely into NavigationController and support StoragePartitions.

content/browser/renderer_host/render_message_filter.cc

 // Copyright (c) 2012 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/renderer_host/render_message_filter.h"
 
 #include <map>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 420 matching lines @@
           render_process_id_,
           &no_javascript_access);
 
   if (!can_create_window) {
     *route_id = MSG_ROUTING_NONE;
     *surface_id = 0;
     return;
   }
 
   // This will clone the sessionStorage for namespace_id_to_clone.
-  scoped_refptr<SessionStorageNamespaceImpl> session_storage_namespace =
+  scoped_refptr<SessionStorageNamespaceImpl> cloned_namespace =
       new SessionStorageNamespaceImpl(dom_storage_context_,
                                       params.session_storage_namespace_id);
-  *cloned_session_storage_namespace_id = session_storage_namespace->id();
+  *cloned_session_storage_namespace_id = cloned_namespace->id();
 
   render_widget_helper_->CreateNewWindow(params,
                                          no_javascript_access,
                                          peer_handle(),
                                          route_id,
                                          surface_id,
-                                         session_storage_namespace.get());
+                                         cloned_namespace);
 }
 
 void RenderMessageFilter::OnMsgCreateWidget(int opener_id,
                                             WebKit::WebPopupType popup_type,
                                             int* route_id,
                                             int* surface_id) {
   render_widget_helper_->CreateNewWidget(
       opener_id, popup_type, route_id, surface_id);
 }
 
@@ skipping 514 matching lines @@
   // are going to switch to accelerated compositing, the GPU process may need
   // round-trips to the UI thread before finishing the frame, causing deadlocks
   // if we delay the UpdateRect until we receive the OnSwapBuffersComplete. So
   // the renderer sent us this message, so that we can unblock the UI thread.
   // We will simply re-use the UpdateRect unblock mechanism, just with a
   // different message.
   render_widget_helper_->DidReceiveBackingStoreMsg(msg);
 }
 
 }  // namespace content