chromeos: converts ash devtools to aura::Window

ui/wm/core/focus_controller.cc

 // 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.
 
 #include "ui/wm/core/focus_controller.h"
 
 #include "base/auto_reset.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/focus_change_observer.h"
@@ skipping 54 matching lines @@
 
 void FocusController::ActivateWindow(aura::Window* window) {
   FocusWindow(window);
 }
 
 void FocusController::DeactivateWindow(aura::Window* window) {
   if (window)
     FocusWindow(rules_->GetNextActivatableWindow(window));
 }
 
-aura::Window* FocusController::GetActiveWindow() {
+const aura::Window* FocusController::GetActiveWindow() const {
   return active_window_;
 }
 
 aura::Window* FocusController::GetActivatableWindow(aura::Window* window) {
   return rules_->GetActivatableWindow(window);
 }
 
 aura::Window* FocusController::GetToplevelWindow(aura::Window* window) {
   return rules_->GetToplevelWindow(window);
 }
@@ skipping 266 matching lines @@
   // FocusWindow() will focus the topmost window, which may not be the
   // currently focused one.
   if (rules_->CanFocusWindow(GetToplevelWindow(window))) {
     FocusAndActivateWindow(
         aura::client::ActivationChangeObserver::ActivationReason::INPUT_EVENT,
         window);
   }
 }
 
 }  // namespace wm