WIP (Introduce WTF::NonNullPtr<T>.)

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 1780 matching lines @@
 }
 
 void Document::updateStyleIfNeeded()
 {
     ASSERT(isMainThread());
     ASSERT(!view() || (!view()->isInLayout() && !view()->isPainting()));
 
     if (!needsStyleRecalc() && !childNeedsStyleRecalc() && !childNeedsDistributionRecalc())
         return;
 
-    AnimationUpdateBlock animationUpdateBlock(m_frame ? m_frame->animation() : 0);
+    AnimationUpdateBlock animationUpdateBlock(m_frame ? m_frame->animation().get() : 0);
     recalcStyle(NoChange);
 }
 
 void Document::updateStyleForNodeIfNeeded(Node* node)
 {
     if (!hasPendingForcedStyleRecalc() && !childNeedsStyleRecalc() && !needsStyleRecalc())
         return;
 
     bool needsStyleRecalc = hasPendingForcedStyleRecalc();
     for (Node* ancestor = node; ancestor && !needsStyleRecalc; ancestor = ancestor->parentOrShadowHostNode())
@@ skipping 1548 matching lines @@
     }
 
     m_activeElement = newActiveElement;
 }
 
 void Document::removeFocusedElementOfSubtree(Node* node, bool amongChildrenOnly)
 {
     if (!m_focusedElement)
         return;
 
-    Element* focusedElement = node->treeScope().adjustedFocusedElement();
+    Element* focusedElement = node->treeScope()->adjustedFocusedElement();
     if (!focusedElement)
         return;
 
     bool nodeInSubtree = false;
     if (amongChildrenOnly)
         nodeInSubtree = focusedElement->isDescendantOf(node);
     else
         nodeInSubtree = (focusedElement == node) || focusedElement->isDescendantOf(node);
 
     if (nodeInSubtree)
@@ skipping 2068 matching lines @@
 {
     return DocumentLifecycleNotifier::create(this);
 }
 
 DocumentLifecycleNotifier* Document::lifecycleNotifier()
 {
     return static_cast<DocumentLifecycleNotifier*>(ScriptExecutionContext::lifecycleNotifier());
 }
 
 } // namespace WebCore