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

ash/frame/frame_border_hit_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_FRAME_FRAME_BORDER_HIT_TEST_H_
-#define ASH_FRAME_FRAME_BORDER_HIT_TEST_H_
-
-#include "ash/ash_export.h"
-
-namespace gfx {
-class Point;
-}
-
-namespace views {
-class NonClientFrameView;
-}
-
-namespace ash {
-
-class FrameCaptionButtonContainerView;
-
-// Returns the HitTestCompat for the specified point.
-ASH_EXPORT int FrameBorderNonClientHitTest(
-    views::NonClientFrameView* view,
-    FrameCaptionButtonContainerView* caption_button_container,
-    const gfx::Point& point_in_widget);
-
-}  // namespace ash
-
-#endif  // ASH_FRAME_FRAME_BORDER_HIT_TEST_H_