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

ash/wm/immersive_context_ash.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_WM_IMMERSIVE_CONTEXT_ASH_H_
-#define ASH_WM_IMMERSIVE_CONTEXT_ASH_H_
-
-#include "ash/shared/immersive_context.h"
-#include "base/macros.h"
-
-namespace ash {
-
-class ASH_EXPORT ImmersiveContextAsh : public ImmersiveContext {
- public:
-  ImmersiveContextAsh();
-  ~ImmersiveContextAsh() override;
-
-  // ImmersiveContext:
-  void InstallResizeHandleWindowTargeter(
-      ImmersiveFullscreenController* controller) override;
-  void OnEnteringOrExitingImmersive(ImmersiveFullscreenController* controller,
-                                    bool entering) override;
-  gfx::Rect GetDisplayBoundsInScreen(views::Widget* widget) override;
-  void AddPointerWatcher(views::PointerWatcher* watcher,
-                         views::PointerWatcherEventTypes events) override;
-  void RemovePointerWatcher(views::PointerWatcher* watcher) override;
-  bool DoesAnyWindowHaveCapture() override;
-  bool IsMouseEventsEnabled() override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ImmersiveContextAsh);
-};
-
-}  // namespace ash
-
-#endif  // ASH_WM_IMMERSIVE_CONTEXT_ASH_H_