Minor cleanup of view manager test

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 45 matching lines @@
 };
 
 // Converts Changes to string descriptions.
 std::vector<std::string> ChangesToDescription1(
     const std::vector<Change>& changes);
 
 // Returns a string description of |changes[0].nodes|. Returns an empty string
 // if change.size() != 1.
 std::string ChangeNodeDescription(const std::vector<Change>& changes);
 
+// Converts INodes to TestNodes.
+void INodesToTestNodes(const Array<INodePtr>& data,
+                       std::vector<TestNode>* test_nodes);
+
 // TestChangeTracker is used to record IViewManagerClient functions. It notifies
 // a delegate any time a change is added.
 class TestChangeTracker {
  public:
   // Used to notify the delegate when a change is added. A change corresponds to
   // a single IViewManagerClient function.
   class Delegate {
    public:
     virtual void OnChangeAdded() = 0;
 
@@ skipping 37 matching lines @@
   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_