chromeos: converts ash devtools to aura::Window

chromecast/graphics/cast_focus_client_aura.h

 // Copyright 2017 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 CHROMECAST_GRAPHICS_CAST_FOCUS_CLIENT_AURA_H_
 #define CHROMECAST_GRAPHICS_CAST_FOCUS_CLIENT_AURA_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 22 matching lines @@
   void FocusWindow(aura::Window* window) override;
   void ResetFocusWithinActiveWindow(aura::Window* window) override;
   aura::Window* GetFocusedWindow() override;
 
   // Overridden from aura::client::ActivationClient:
   void AddObserver(aura::client::ActivationChangeObserver* observer) override;
   void RemoveObserver(
       aura::client::ActivationChangeObserver* observer) override;
   void ActivateWindow(aura::Window* window) override;
   void DeactivateWindow(aura::Window* window) override;
-  aura::Window* GetActiveWindow() override;
+  const aura::Window* GetActiveWindow() const override;
   aura::Window* GetActivatableWindow(aura::Window* window) override;
   aura::Window* GetToplevelWindow(aura::Window* window) override;
   bool CanActivateWindow(aura::Window* window) const override;
 
  private:
   // aura::WindowObserver implementation:
   void OnWindowVisibilityChanged(aura::Window* window, bool visible) override;
   void OnWindowDestroying(aura::Window* window) override;
   void OnWindowHierarchyChanging(const HierarchyChangeParams& params) override;
 
@@ skipping 15 matching lines @@
   // focus to them.  We assume that this is a small list so that we can perform
   // linear ops on it.
   std::vector<aura::Window*> focusable_windows_;
 
   DISALLOW_COPY_AND_ASSIGN(CastFocusClientAura);
 };
 
 }  // namespace chromecast
 
 #endif  // CHROMECAST_GRAPHICS_CAST_FOCUS_CLIENT_AURA_H_