Have Node::document() return a reference instead of a pointer

Source/core/dom/EventDispatcher.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, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 42 matching lines @@
 EventDispatcher::EventDispatcher(Node* node, PassRefPtr<Event> event)
     : m_node(node)
     , m_event(event)
 #ifndef NDEBUG
     , m_eventDispatched(false)
 #endif
 {
     ASSERT(node);
     ASSERT(m_event.get());
     ASSERT(!m_event->type().isNull()); // JavaScript code can create an event with an empty name, but not null.
-    m_view = node->document()->view();
+    m_view = node->document().view();
     EventRetargeter::ensureEventPath(m_node.get(), m_event.get());
 }
 
 void EventDispatcher::dispatchScopedEvent(Node* node, PassRefPtr<EventDispatchMediator> mediator)
 {
     // We need to set the target here because it can go away by the time we actually fire the event.
     mediator->event()->setTarget(EventRetargeter::eventTargetRespectingTargetRules(node));
     ScopedEventQueue::instance()->enqueueEventDispatchMediator(mediator);
 }
 
 void EventDispatcher::dispatchSimulatedClick(Node* node, Event* underlyingEvent, SimulatedClickMouseEventOptions mouseEventOptions, SimulatedClickVisualOptions visualOptions)
 {
     if (isDisabledFormControl(node))
         return;
 
     if (!gNodesDispatchingSimulatedClicks)
         gNodesDispatchingSimulatedClicks = new HashSet<Node*>;
     else if (gNodesDispatchingSimulatedClicks->contains(node))
         return;
 
     gNodesDispatchingSimulatedClicks->add(node);
 
     if (mouseEventOptions == SendMouseOverUpDownEvents)
-        EventDispatcher(node, SimulatedMouseEvent::create(eventNames().mouseoverEvent, node->document()->defaultView(), underlyingEvent)).dispatch();
+        EventDispatcher(node, SimulatedMouseEvent::create(eventNames().mouseoverEvent, node->document().defaultView(), underlyingEvent)).dispatch();
 
     if (mouseEventOptions != SendNoEvents)
-        EventDispatcher(node, SimulatedMouseEvent::create(eventNames().mousedownEvent, node->document()->defaultView(), underlyingEvent)).dispatch();
+        EventDispatcher(node, SimulatedMouseEvent::create(eventNames().mousedownEvent, node->document().defaultView(), underlyingEvent)).dispatch();
     node->setActive(true, visualOptions == ShowPressedLook);
     if (mouseEventOptions != SendNoEvents)
-        EventDispatcher(node, SimulatedMouseEvent::create(eventNames().mouseupEvent, node->document()->defaultView(), underlyingEvent)).dispatch();
+        EventDispatcher(node, SimulatedMouseEvent::create(eventNames().mouseupEvent, node->document().defaultView(), underlyingEvent)).dispatch();
     node->setActive(false);
 
     // always send click
-    EventDispatcher(node, SimulatedMouseEvent::create(eventNames().clickEvent, node->document()->defaultView(), underlyingEvent)).dispatch();
+    EventDispatcher(node, SimulatedMouseEvent::create(eventNames().clickEvent, node->document().defaultView(), underlyingEvent)).dispatch();
 
     gNodesDispatchingSimulatedClicks->remove(node);
 }
 
 bool EventDispatcher::dispatch()
 {
 #ifndef NDEBUG
     ASSERT(!m_eventDispatched);
     m_eventDispatched = true;
 #endif
     ChildNodesLazySnapshot::takeChildNodesLazySnapshot();
 
     m_event->setTarget(EventRetargeter::eventTargetRespectingTargetRules(m_node.get()));
     ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
     ASSERT(m_event->target());
     WindowEventContext windowEventContext(m_event.get(), m_node.get(), topEventContext());
-    InspectorInstrumentationCookie cookie = InspectorInstrumentation::willDispatchEvent(m_node->document(), *m_event, windowEventContext.window(), m_node.get(), m_event->eventPath());
+    InspectorInstrumentationCookie cookie = InspectorInstrumentation::willDispatchEvent(&m_node->document(), *m_event, windowEventContext.window(), m_node.get(), m_event->eventPath());
 
     void* preDispatchEventHandlerResult;
     if (dispatchEventPreProcess(preDispatchEventHandlerResult) == ContinueDispatching)
         if (dispatchEventAtCapturing(windowEventContext) == ContinueDispatching)
             if (dispatchEventAtTarget() == ContinueDispatching)
                 dispatchEventAtBubbling(windowEventContext);
     dispatchEventPostProcess(preDispatchEventHandlerResult);
 
     // Ensure that after event dispatch, the event's target object is the
     // outermost shadow DOM boundary.
@@ skipping 93 matching lines @@
         }
     }
 }
 
 const EventContext* EventDispatcher::topEventContext()
 {
     return m_event->eventPath().isEmpty() ? 0 : m_event->eventPath().last().get();
 }
 
 }