chromeos: Move files in //ash/common to //ash, part 2

ash/test/ash_test.h

 // Copyright 2016 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 ASH_COMMON_TEST_ASH_TEST_H_
-#define ASH_COMMON_TEST_ASH_TEST_H_
+#ifndef ASH_TEST_ASH_TEST_H_
+#define ASH_TEST_ASH_TEST_H_
 
 #include <memory>
 #include <string>
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/display/display_layout.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/views/widget/widget.h"
@@ skipping 122 matching lines @@
   void TearDown() override;
 
  private:
   std::unique_ptr<AshTestImpl> test_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(AshTest);
 };
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_TEST_ASH_TEST_H_
+#endif  // ASH_TEST_ASH_TEST_H_