Removes usage of aura::Window from Node

mojo/services/view_manager/default_access_policy.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/view_manager/default_access_policy.h"
 
 #include "mojo/services/view_manager/access_policy_delegate.h"
 #include "mojo/services/view_manager/node.h"
 
 namespace mojo {
 namespace service {
 
 DefaultAccessPolicy::DefaultAccessPolicy(ConnectionSpecificId connection_id,
                                          AccessPolicyDelegate* delegate)
     : connection_id_(connection_id),
       delegate_(delegate) {
 }
 
 DefaultAccessPolicy::~DefaultAccessPolicy() {
 }
 
 bool DefaultAccessPolicy::CanRemoveNodeFromParent(const Node* node) const {
   if (!WasCreatedByThisConnection(node))
     return false;  // Can only unparent nodes we created.
 
-  const Node* parent = node->GetParent();
-  return IsNodeInRoots(parent) || WasCreatedByThisConnection(parent);
+  return IsNodeInRoots(node->parent()) ||
+      WasCreatedByThisConnection(node->parent());
 }
 
 bool DefaultAccessPolicy::CanAddNode(const Node* parent,
                                      const Node* child) const {
   return WasCreatedByThisConnection(child) &&
       (IsNodeInRoots(parent) ||
        (WasCreatedByThisConnection(parent) &&
         !delegate_->IsNodeRootOfAnotherConnectionForAccessPolicy(parent)));
 }
 
@@ skipping 61 matching lines @@
   return view_id.connection_id == connection_id_;
 }
 
 bool DefaultAccessPolicy::IsNodeInRoots(const Node* node) const {
   return delegate_->GetRootsForAccessPolicy().count(
       NodeIdToTransportId(node->id())) > 0;
 }
 
 }  // namespace service
 }  // namespace mojo