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

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 1fcb888a0b40f5abef981886816abb3330f4eda7..a06872a7b6c5fd0027e4ce60a0f5e1b99b844ead 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -1798,7 +1798,7 @@ void Document::updateStyleIfNeeded()
     if (!needsStyleRecalc() && !childNeedsStyleRecalc() && !childNeedsDistributionRecalc())
         return;
 
-    AnimationUpdateBlock animationUpdateBlock(m_frame ? m_frame->animation() : 0);
+    AnimationUpdateBlock animationUpdateBlock(m_frame ? m_frame->animation().get() : 0);
     recalcStyle(NoChange);
 }
 
@@ -3367,7 +3367,7 @@ void Document::removeFocusedElementOfSubtree(Node* node, bool amongChildrenOnly)
     if (!m_focusedElement)
         return;
 
-    Element* focusedElement = node->treeScope().adjustedFocusedElement();
+    Element* focusedElement = node->treeScope()->adjustedFocusedElement();
     if (!focusedElement)
         return;