Delay instantiating InputDeviceCapabilities until accessed.

third_party/WebKit/Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc.
  * All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
@@ skipping 2640 matching lines @@
   if (authorShadowRoot() && authorShadowRoot()->delegatesFocus()) {
     if (isShadowIncludingInclusiveAncestorOf(document().focusedElement()))
       return;
 
     // Slide the focus to its inner node.
     Element* found =
         document().page()->focusController().findFocusableElementInShadowHost(
             *this);
     if (found && isShadowIncludingInclusiveAncestorOf(found)) {
       found->focus(FocusParams(SelectionBehaviorOnFocus::Reset,
-                               WebFocusTypeForward, nullptr));
+                               WebFocusTypeForward,
+                               InputDeviceCapabilities::Null));
       return;
     }
   }
 
   if (!document().page()->focusController().setFocusedElement(
           this, document().frame(), params))
     return;
 
   if (document().focusedElement() == this &&
       document().frame()->hasReceivedUserGesture()) {
@@ skipping 106 matching lines @@
 
 bool Element::isFocusedElementInDocument() const {
   return this == document().focusedElement();
 }
 
 Element* Element::adjustedFocusedElementInTreeScope() const {
   return isInTreeScope() ? containingTreeScope().adjustedFocusedElement()
                          : nullptr;
 }
 
-void Element::dispatchFocusEvent(Element* oldFocusedElement,
-                                 WebFocusType type,
-                                 InputDeviceCapabilities* sourceCapabilities) {
+void Element::dispatchFocusEvent(
+    Element* oldFocusedElement,
+    WebFocusType type,
+    const InputDeviceCapabilitiesValue& sourceCapabilities) {
   dispatchEvent(FocusEvent::create(EventTypeNames::focus, false, false,
                                    document().domWindow(), 0, oldFocusedElement,
                                    sourceCapabilities));
 }
 
-void Element::dispatchBlurEvent(Element* newFocusedElement,
-                                WebFocusType type,
-                                InputDeviceCapabilities* sourceCapabilities) {
+void Element::dispatchBlurEvent(
+    Element* newFocusedElement,
+    WebFocusType type,
+    const InputDeviceCapabilitiesValue& sourceCapabilities) {
   dispatchEvent(FocusEvent::create(EventTypeNames::blur, false, false,
                                    document().domWindow(), 0, newFocusedElement,
                                    sourceCapabilities));
 }
 
 void Element::dispatchFocusInEvent(
     const AtomicString& eventType,
     Element* oldFocusedElement,
     WebFocusType,
-    InputDeviceCapabilities* sourceCapabilities) {
+    const InputDeviceCapabilitiesValue& sourceCapabilities) {
 #if DCHECK_IS_ON()
   DCHECK(!EventDispatchForbiddenScope::isEventDispatchForbidden());
 #endif
   DCHECK(eventType == EventTypeNames::focusin ||
          eventType == EventTypeNames::DOMFocusIn);
   dispatchScopedEvent(
       FocusEvent::create(eventType, true, false, document().domWindow(), 0,
                          oldFocusedElement, sourceCapabilities));
 }
 
 void Element::dispatchFocusOutEvent(
     const AtomicString& eventType,
     Element* newFocusedElement,
-    InputDeviceCapabilities* sourceCapabilities) {
+    const InputDeviceCapabilitiesValue& sourceCapabilities) {
 #if DCHECK_IS_ON()
   DCHECK(!EventDispatchForbiddenScope::isEventDispatchForbidden());
 #endif
   DCHECK(eventType == EventTypeNames::focusout ||
          eventType == EventTypeNames::DOMFocusOut);
   dispatchScopedEvent(
       FocusEvent::create(eventType, true, false, document().domWindow(), 0,
                          newFocusedElement, sourceCapabilities));
 }
 
@@ skipping 1301 matching lines @@
 }
 
 DEFINE_TRACE_WRAPPERS(Element) {
   if (hasRareData()) {
     visitor->traceWrappers(elementRareData());
   }
   ContainerNode::traceWrappers(visitor);
 }
 
 }  // namespace blink