Delay instantiating InputDeviceCapabilities until accessed.

third_party/WebKit/Source/core/events/FocusEvent.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
 #include "core/events/UIEvent.h"
 
 namespace blink {
 
 class FocusEvent final : public UIEvent {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static FocusEvent* create() { return new FocusEvent; }
 
-  static FocusEvent* create(const AtomicString& type,
-                            bool canBubble,
-                            bool cancelable,
-                            AbstractView* view,
-                            int detail,
-                            EventTarget* relatedTarget,
-                            InputDeviceCapabilities* sourceCapabilities) {
+  static FocusEvent* create(
+      const AtomicString& type,
+      bool canBubble,
+      bool cancelable,
+      AbstractView* view,
+      int detail,
+      EventTarget* relatedTarget,
+      const InputDeviceCapabilitiesValue& sourceCapabilities) {
     return new FocusEvent(type, canBubble, cancelable, view, detail,
                           relatedTarget, sourceCapabilities);
   }
 
   static FocusEvent* create(const AtomicString& type,
                             const FocusEventInit& initializer) {
     return new FocusEvent(type, initializer);
   }
 
   EventTarget* relatedTarget() const { return m_relatedTarget.get(); }
   void setRelatedTarget(EventTarget* relatedTarget) {
     m_relatedTarget = relatedTarget;
   }
 
   const AtomicString& interfaceName() const override;
   bool isFocusEvent() const override;
 
   EventDispatchMediator* createMediator() override;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   FocusEvent();
   FocusEvent(const AtomicString& type,
              bool canBubble,
              bool cancelable,
              AbstractView*,
              int,
              EventTarget*,
-             InputDeviceCapabilities*);
+             const InputDeviceCapabilitiesValue&);
   FocusEvent(const AtomicString& type, const FocusEventInit&);
 
   Member<EventTarget> m_relatedTarget;
 };
 
 DEFINE_EVENT_TYPE_CASTS(FocusEvent);
 
 class FocusEventDispatchMediator final : public EventDispatchMediator {
  public:
   static FocusEventDispatchMediator* create(FocusEvent*);
 
  private:
   explicit FocusEventDispatchMediator(FocusEvent*);
   FocusEvent& event() const {
     return static_cast<FocusEvent&>(EventDispatchMediator::event());
   }
   DispatchEventResult dispatchEvent(EventDispatcher&) const override;
 };
 
 }  // namespace blink
 
 #endif  // FocusEvent_h