Return reference from styleEngine() accessor.

Source/core/html/HTMLLinkElement.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) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Rob Buis (rwlbuis@gmail.com)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 137 matching lines @@
 {
     return adoptRefWillBeNoop(new HTMLLinkElement(document, createdByParser));
 }
 
 HTMLLinkElement::~HTMLLinkElement()
 {
 #if !ENABLE(OILPAN)
     m_link.clear();
 
     if (inDocument())
-        document().styleEngine()->removeStyleSheetCandidateNode(this);
+        document().styleEngine().removeStyleSheetCandidateNode(this);
 #endif
 
     linkLoadEventSender().cancelEvent(this);
 }
 
 void HTMLLinkElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     if (name == relAttr) {
         m_relAttribute = LinkRelAttribute(value);
         process();
@@ skipping 107 matching lines @@
     if (!insertionPoint->inDocument())
         return InsertionDone;
 
     m_isInShadowTree = isInShadowTree();
     if (m_isInShadowTree) {
         String message = "HTML element <link> is ignored in shadow tree.";
         document().addConsoleMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel, message));
         return InsertionDone;
     }
 
-    document().styleEngine()->addStyleSheetCandidateNode(this, m_createdByParser);
+    document().styleEngine().addStyleSheetCandidateNode(this, m_createdByParser);
 
     process();
 
     if (m_link)
         m_link->ownerInserted();
 
     return InsertionDone;
 }
 
 void HTMLLinkElement::removedFrom(ContainerNode* insertionPoint)
 {
     HTMLElement::removedFrom(insertionPoint);
     if (!insertionPoint->inDocument())
         return;
 
     m_linkLoader.released();
 
     if (m_isInShadowTree) {
         ASSERT(!linkStyle() || !linkStyle()->hasSheet());
         return;
     }
-    document().styleEngine()->removeStyleSheetCandidateNode(this);
+    document().styleEngine().removeStyleSheetCandidateNode(this);
 
     RefPtrWillBeRawPtr<StyleSheet> removedSheet = sheet();
 
     if (m_link)
         m_link->ownerRemoved();
 
     document().removedStyleSheet(removedSheet.get());
 }
 
 void HTMLLinkElement::finishParsingChildren()
@@ skipping 279 matching lines @@
 }
 
 void LinkStyle::addPendingSheet(PendingSheetType type)
 {
     if (type <= m_pendingSheetType)
         return;
     m_pendingSheetType = type;
 
     if (m_pendingSheetType == NonBlocking)
         return;
-    m_owner->document().styleEngine()->addPendingSheet();
+    m_owner->document().styleEngine().addPendingSheet();
 }
 
 void LinkStyle::removePendingSheet()
 {
     PendingSheetType type = m_pendingSheetType;
     m_pendingSheetType = None;
 
     if (type == None)
         return;
     if (type == NonBlocking) {
         // Tell StyleEngine to re-compute styleSheets of this m_owner's treescope.
-        m_owner->document().styleEngine()->modifiedStyleSheetCandidateNode(m_owner);
+        m_owner->document().styleEngine().modifiedStyleSheetCandidateNode(m_owner);
         // Document::removePendingSheet() triggers the style selector recalc for blocking sheets.
         // FIXME: We don't have enough knowledge at this point to know if we're adding or removing a sheet
         // so we can't call addedStyleSheet() or removedStyleSheet().
         m_owner->document().styleResolverChanged();
         return;
     }
 
-    m_owner->document().styleEngine()->removePendingSheet(m_owner);
+    m_owner->document().styleEngine().removePendingSheet(m_owner);
 }
 
 void LinkStyle::setDisabledState(bool disabled)
 {
     LinkStyle::DisabledState oldDisabledState = m_disabledState;
     m_disabledState = disabled ? Disabled : EnabledViaScript;
     if (oldDisabledState != m_disabledState) {
         // If we change the disabled state while the sheet is still loading, then we have to
         // perform three checks:
         if (styleSheetIsLoading()) {
@@ skipping 113 matching lines @@
         removePendingSheet();
 }
 
 DEFINE_TRACE(LinkStyle)
 {
     visitor->trace(m_sheet);
     LinkResource::trace(visitor);
 }
 
 } // namespace blink