cros: allow aura window not considered activatable for pointer event

ui/wm/core/base_focus_rules.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 UI_WM_CORE_BASE_FOCUS_RULES_H_
 #define UI_WM_CORE_BASE_FOCUS_RULES_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/wm/core/focus_rules.h"
@@ skipping 11 matching lines @@
   virtual bool SupportsChildActivation(aura::Window* window) const = 0;
 
   // Returns true if |window| is considered visible for activation purposes.
   virtual bool IsWindowConsideredVisibleForActivation(
       aura::Window* window) const;
 
   // Overridden from FocusRules:
   bool IsToplevelWindow(aura::Window* window) const override;
   bool CanActivateWindow(aura::Window* window) const override;
   bool CanFocusWindow(aura::Window* window) const override;
+  bool IsWindowConsideredActivatableForEvent(aura::Window* window,
+                                             ui::Event* event) const override;
   aura::Window* GetToplevelWindow(aura::Window* window) const override;
   aura::Window* GetActivatableWindow(aura::Window* window) const override;
   aura::Window* GetFocusableWindow(aura::Window* window) const override;
   aura::Window* GetNextActivatableWindow(aura::Window* ignore) const override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BaseFocusRules);
 };
 
 }  // namespace wm
 
 #endif  // UI_WM_CORE_BASE_FOCUS_RULES_H_