Pass implementation object to supplemental classes by reference

Source/core/events/EventPath.cpp

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 65 matching lines @@
 
 static inline bool inTheSameScope(ShadowRoot* shadowRoot, EventTarget* target)
 {
     return target->toNode() && target->toNode()->treeScope().rootNode() == shadowRoot;
 }
 
 static inline EventDispatchBehavior determineDispatchBehavior(Event* event, ShadowRoot* shadowRoot, EventTarget* target)
 {
     // Video-only full screen is a mode where we use the shadow DOM as an implementation
     // detail that should not be detectable by the web content.
-    if (Element* element = FullscreenElementStack::currentFullScreenElementFrom(&target->toNode()->document())) {
+    if (Element* element = FullscreenElementStack::currentFullScreenElementFrom(target->toNode()->document())) {
         // FIXME: We assume that if the full screen element is a media element that it's
         // the video-only full screen. Both here and elsewhere. But that is probably wrong.
         if (element->isMediaElement() && shadowRoot && shadowRoot->host() == element)
             return StayInsideShadowDOM;
     }
 
     // WebKit never allowed selectstart event to cross the the shadow DOM boundary.
     // Changing this breaks existing sites.
     // See https://bugs.webkit.org/show_bug.cgi?id=52195 for details.
     const AtomicString eventType = event->type();
@@ skipping 271 matching lines @@
 
 #ifndef NDEBUG
 void EventPath::checkReachability(TreeScope& treeScope, TouchList& touchList)
 {
     for (size_t i = 0; i < touchList.length(); ++i)
         ASSERT(touchList.item(i)->target()->toNode()->treeScope().isInclusiveOlderSiblingShadowRootOrAncestorTreeScopeOf(treeScope));
 }
 #endif
 
 } // namespace