Revert 114095 - Move the concept of Activation to the Shell.

ui/aura_shell/activation_controller.h

Index: ui/aura_shell/activation_controller.h
===================================================================
--- ui/aura_shell/activation_controller.h	(revision 114099)
+++ ui/aura_shell/activation_controller.h	(working copy)
@@ -1,74 +0,0 @@
-// Copyright (c) 2011 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_AURA_SHELL_ACTIVATION_CONTROLLER_H_
-#define UI_AURA_SHELL_ACTIVATION_CONTROLLER_H_
-#pragma once
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "ui/aura/client/activation_client.h"
-#include "ui/aura/root_window_observer.h"
-#include "ui/aura/window_observer.h"
-
-namespace aura_shell {
-namespace internal {
-
-class ActivationController : public aura::ActivationClient,
-                             public aura::WindowObserver,
-                             public aura::RootWindowObserver {
- public:
-  ActivationController();
-  virtual ~ActivationController();
-
-  // Returns true if |window| exists within a container that supports
-  // activation.
-  static aura::Window* GetActivatableWindow(aura::Window* window);
-
-  // Overridden from aura::ActivationClient:
-  virtual void ActivateWindow(aura::Window* window) OVERRIDE;
-  virtual void DeactivateWindow(aura::Window* window) OVERRIDE;
-  virtual aura::Window* GetActiveWindow() OVERRIDE;
-  virtual bool CanFocusWindow(aura::Window* window) const OVERRIDE;
-
-  // Overridden from aura::WindowObserver:
-  virtual void OnWindowVisibilityChanged(aura::Window* window,
-                                         bool visible) OVERRIDE;
-  virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
-
-  // Overridden from aura::RootWindowObserver:
-  virtual void OnWindowInitialized(aura::Window* window) OVERRIDE;
-  virtual void OnWindowFocused(aura::Window* window) OVERRIDE;
-
-#if defined(UNIT_TEST)
-  void set_default_container_for_test(aura::Window* window) {
-    default_container_for_test_ = window;
-  }
-#endif
-
- private:
-  // Shifts activation to the next window, ignoring |window|.
-  void ActivateNextWindow(aura::Window* window);
-
-  // Returns the next window that should be activated, ignoring |ignore|.
-  aura::Window* GetTopmostWindowToActivate(aura::Window* ignore) const;
-
-  // True inside ActivateWindow(). Used to prevent recursion of focus
-  // change notifications causing activation.
-  bool updating_activation_;
-
-  // For tests that are not running with a Shell instance,
-  // ActivationController's attempts to locate the next active window in
-  // GetTopmostWindowToActivate() will crash, so we provide this way for such
-  // tests to specify a default container.
-  aura::Window* default_container_for_test_;
-
-  DISALLOW_COPY_AND_ASSIGN(ActivationController);
-};
-
-}  // namespace internal
-}  // namespace aura_shell
-
-#endif  // UI_AURA_SHELL_ACTIVATION_CONTROLLER_H_