Delay instantiating InputDeviceCapabilities until accessed.

third_party/WebKit/Source/core/html/HTMLFormControlElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 353 matching lines @@
   return false;
 }
 
 bool HTMLFormControlElement::shouldHaveFocusAppearance() const {
   return !m_wasFocusedByMouse || shouldShowFocusRingOnMouseFocus();
 }
 
 void HTMLFormControlElement::dispatchFocusEvent(
     Element* oldFocusedElement,
     WebFocusType type,
-    InputDeviceCapabilities* sourceCapabilities) {
+    const InputDeviceCapabilitiesValue& sourceCapabilities) {
   if (type != WebFocusTypePage)
     m_wasFocusedByMouse = type == WebFocusTypeMouse;
   // ContainerNode::handleStyleChangeOnFocusStateChange() will inform
   // LayoutTheme about the focus state change.
   HTMLElement::dispatchFocusEvent(oldFocusedElement, type, sourceCapabilities);
 }
 
 void HTMLFormControlElement::willCallDefaultEventHandler(const Event& event) {
   if (!m_wasFocusedByMouse)
     return;
@@ skipping 210 matching lines @@
 }
 
 void HTMLFormControlElement::setCustomValidity(const String& error) {
   ListedElement::setCustomValidity(error);
   setNeedsValidityCheck();
 }
 
 void HTMLFormControlElement::dispatchBlurEvent(
     Element* newFocusedElement,
     WebFocusType type,
-    InputDeviceCapabilities* sourceCapabilities) {
+    const InputDeviceCapabilitiesValue& sourceCapabilities) {
   if (type != WebFocusTypePage)
     m_wasFocusedByMouse = false;
   HTMLElement::dispatchBlurEvent(newFocusedElement, type, sourceCapabilities);
   hideVisibleValidationMessage();
 }
 
 bool HTMLFormControlElement::isSuccessfulSubmitButton() const {
   return canBeSuccessfulSubmitButton() && !isDisabledFormControl();
 }
 
@@ skipping 18 matching lines @@
     const Element& source) {
   HTMLElement::copyNonAttributePropertiesFromElement(source);
   setNeedsValidityCheck();
 }
 
 void HTMLFormControlElement::associateWith(HTMLFormElement* form) {
   associateByParser(form);
 };
 
 }  // namespace blink