Mojo: more idiomatic C++ bindings

mojo/services/view_manager/test_change_tracker.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_VIEW_MANAGER_TEST_CHANGE_TRACKER_H_
 #define MOJO_SERVICES_VIEW_MANAGER_TEST_CHANGE_TRACKER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 71 matching lines @@
 
   void set_delegate(Delegate* delegate) { delegate_ = delegate; }
 
   std::vector<Change>* changes() { return &changes_; }
 
   // Each of these functions generate a Change. There is one per
   // IViewManagerClient function.
   void OnViewManagerConnectionEstablished(
       TransportConnectionId connection_id,
       TransportChangeId next_server_change_id,
-      const Array<INode>& nodes);
+      Array<INodePtr> nodes);
   void OnServerChangeIdAdvanced(TransportChangeId change_id);
   void OnNodeBoundsChanged(TransportNodeId node_id,
-                           const Rect& old_bounds,
-                           const Rect& new_bounds);
+                           RectPtr old_bounds,
+                           RectPtr new_bounds);
   void OnNodeHierarchyChanged(TransportNodeId node_id,
                               TransportNodeId new_parent_id,
                               TransportNodeId old_parent_id,
                               TransportChangeId server_change_id,
-                              const Array<INode>& nodes);
+                              Array<INodePtr> nodes);
   void OnNodeDeleted(TransportNodeId node_id,
                      TransportChangeId server_change_id);
   void OnViewDeleted(TransportViewId view_id);
   void OnNodeViewReplaced(TransportNodeId node_id,
                           TransportViewId new_view_id,
                           TransportViewId old_view_id);
 
  private:
   void AddChange(const Change& change);
 
   Delegate* delegate_;
   std::vector<Change> changes_;
 
   DISALLOW_COPY_AND_ASSIGN(TestChangeTracker);
 };
 
 }  // namespace service
 }  // namespace view_manager
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_VIEW_MANAGER_TEST_CHANGE_TRACKER_H_