ui: Move overriddes of UITestSuite to private section.

ui/test/test_suite.h

 // Copyright (c) 2012 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 UI_TEST_TEST_SUITE_H_
 #define UI_TEST_TEST_SUITE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/test/test_suite.h"
 
 namespace ui {
 namespace test {
 
 class UITestSuite : public base::TestSuite {
  public:
   UITestSuite(int argc, char** argv);
 
- protected:
+ private:
   // Overridden from base::TestSuite:
   virtual void Initialize() OVERRIDE;
   virtual void Shutdown() OVERRIDE;
 
- private:
   DISALLOW_COPY_AND_ASSIGN(UITestSuite);
 };
 
 }  // namespace test
 }  // namespace ui
 
 #endif  // UI_TEST_TEST_SUITE_H_