Remove old activation code and disable-focus-controller flags

ash/wm/ash_activation_controller.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 ASH_WM_ASH_ACTIVATION_CONTROLLER_H_
-#define ASH_WM_ASH_ACTIVATION_CONTROLLER_H_
-
-#include "ash/ash_export.h"
-#include "ash/wm/activation_controller_delegate.h"
-#include "base/compiler_specific.h"
-#include "base/basictypes.h"
-
-namespace ash {
-namespace internal {
-
-class ASH_EXPORT AshActivationController : public ActivationControllerDelegate {
- public:
-  AshActivationController();
-  virtual ~AshActivationController();
-
- private:
-  // Overridden from ActivationControllerDelegate:
-  virtual aura::Window* WillActivateWindow(aura::Window* window) OVERRIDE;
-  virtual aura::Window* WillFocusWindow(aura::Window* window) OVERRIDE;
-
-  // Returns a handle to the launcher on the active root window which will
-  // be activated as fallback. Also notifies the launcher, so it can return
-  // true from Launcher::CanActivate().
-  aura::Window* PrepareToActivateLauncher();
-
-  DISALLOW_COPY_AND_ASSIGN(AshActivationController);
-};
-
-}  // namespace internal
-}  // namespace ash
-
-#endif  // ASH_WM_ASH_ACTIVATION_CONTROLLER_H_