Consolidates view_manager typedefs

mojo/services/public/cpp/view_manager/lib/view_manager.cc

 // 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.
 
 #include "mojo/services/public/cpp/view_manager/view_manager.h"
 
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "mojo/public/cpp/application/application.h"
 #include "mojo/services/public/cpp/view_manager/lib/view_manager_private.h"
@@ skipping 23 matching lines @@
       views_.erase(it);
   }
 }
 
 // static
 void ViewManager::Create(Application* application,
                          ViewManagerDelegate* delegate) {
   application->AddService<ViewManagerSynchronizer>(delegate);
 }
 
-ViewTreeNode* ViewManager::GetNodeById(TransportNodeId id) {
+ViewTreeNode* ViewManager::GetNodeById(Id id) {
   IdToNodeMap::const_iterator it = nodes_.find(id);
   return it != nodes_.end() ? it->second : NULL;
 }
 
-View* ViewManager::GetViewById(TransportViewId id) {
+View* ViewManager::GetViewById(Id id) {
   IdToViewMap::const_iterator it = views_.find(id);
   return it != views_.end() ? it->second : NULL;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // ViewManager, private:
 
 ViewManager::ViewManager(ViewManagerSynchronizer* synchronizer,
                          ViewManagerDelegate* delegate)
     : delegate_(delegate),
       synchronizer_(synchronizer) {}
 
 }  // namespace view_manager
 }  // namespace mojo