Makes Embed() take a single node

mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.h

 // Copyright 2014 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 MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_LIB_VIEW_MANAGER_CLIENT_IMPL_H_
 #define MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_LIB_VIEW_MANAGER_CLIENT_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 86 matching lines @@
 
   // Overridden from InterfaceImpl:
   virtual void OnConnectionEstablished() OVERRIDE;
 
   // Overridden from ViewManagerClient:
   virtual void OnViewManagerConnectionEstablished(
       ConnectionSpecificId connection_id,
       const String& creator_url,
       Id next_server_change_id,
       Array<NodeDataPtr> nodes) OVERRIDE;
-  virtual void OnRootsAdded(Array<NodeDataPtr> nodes) OVERRIDE;
+  virtual void OnRootAdded(Array<NodeDataPtr> nodes) OVERRIDE;
   virtual void OnServerChangeIdAdvanced(Id next_server_change_id) OVERRIDE;
   virtual void OnNodeBoundsChanged(Id node_id,
                                    RectPtr old_bounds,
                                    RectPtr new_bounds) OVERRIDE;
   virtual void OnNodeHierarchyChanged(Id node_id,
                                       Id new_parent_id,
                                       Id old_parent_id,
                                       Id server_change_id,
                                       Array<NodeDataPtr> nodes) OVERRIDE;
   virtual void OnNodeReordered(Id node_id,
@@ skipping 43 matching lines @@
 
   ViewManagerService* service_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewManagerClientImpl);
 };
 
 }  // namespace view_manager
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_LIB_VIEW_MANAGER_CLIENT_IMPL_H_