Oilpan: Reapply: Remove all the RefPtrs and most of the raw pointers to style

Source/core/dom/StyleEngine.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 149 matching lines @@
     } while (it != begin);
 
     treeScopes.insertBefore(followingTreeScope, treeScope);
 }
 
 TreeScopeStyleSheetCollection* StyleEngine::ensureStyleSheetCollectionFor(TreeScope& treeScope)
 {
     if (treeScope == m_document)
         return &m_documentStyleSheetCollection;
 
-    HashMap<TreeScope*, OwnPtr<TreeScopeStyleSheetCollection> >::AddResult result = m_styleSheetCollectionMap.add(&treeScope, nullptr);
+    WillBeHeapHashMap<TreeScope*, OwnPtrWillBeMember<ShadowTreeStyleSheetCollection> >::AddResult result = m_styleSheetCollectionMap.add(&treeScope, nullptr);
     if (result.isNewEntry)
-        result.storedValue->value = adoptPtr(new ShadowTreeStyleSheetCollection(toShadowRoot(treeScope)));
+        result.storedValue->value = adoptPtrWillBeNoop(new ShadowTreeStyleSheetCollection(toShadowRoot(treeScope)));
     return result.storedValue->value.get();
 }
 
 TreeScopeStyleSheetCollection* StyleEngine::styleSheetCollectionFor(TreeScope& treeScope)
 {
     if (treeScope == m_document)
         return &m_documentStyleSheetCollection;
 
-    HashMap<TreeScope*, OwnPtr<TreeScopeStyleSheetCollection> >::iterator it = m_styleSheetCollectionMap.find(&treeScope);
+    WillBeHeapHashMap<TreeScope*, OwnPtrWillBeMember<ShadowTreeStyleSheetCollection> >::iterator it = m_styleSheetCollectionMap.find(&treeScope);
     if (it == m_styleSheetCollectionMap.end())
         return 0;
     return it->value.get();
 }
 
 const WillBeHeapVector<RefPtrWillBeMember<StyleSheet> >& StyleEngine::styleSheetsForStyleSheetList(TreeScope& treeScope)
 {
     if (treeScope == m_document)
         return m_documentStyleSheetCollection.styleSheetsForStyleSheetList();
 
@@ skipping 387 matching lines @@
     m_dirtyTreeScopes.add(&scope);
 }
 
 void StyleEngine::markDocumentDirty()
 {
     m_documentScopeDirty = true;
     if (!HTMLImport::isMaster(&m_document))
         m_document.import()->master()->styleEngine()->markDocumentDirty();
 }
 
-PassRefPtr<CSSStyleSheet> StyleEngine::createSheet(Element* e, const String& text, TextPosition startPosition, bool createdByParser)
+PassRefPtrWillBeRawPtr<CSSStyleSheet> StyleEngine::createSheet(Element* e, const String& text, TextPosition startPosition, bool createdByParser)
 {
-    RefPtr<CSSStyleSheet> styleSheet;
+    RefPtrWillBeRawPtr<CSSStyleSheet> styleSheet;
 
     e->document().styleEngine()->addPendingSheet();
 
     if (!e->document().inQuirksMode()) {
         AtomicString textContent(text);
 
         WillBeHeapHashMap<AtomicString, RawPtrWillBeWeakMember<StyleSheetContents> >::iterator it = textToSheetCache().find(textContent);
         if (it == textToSheetCache().end()) {
             styleSheet = StyleEngine::parseSheet(e, text, startPosition, createdByParser);
             if (styleSheet->contents()->maybeCacheable()) {
                 textToSheetCache().add(textContent, styleSheet->contents());
                 sheetToTextCache().add(styleSheet->contents(), textContent);
             }
         } else {
             ASSERT(it->value->maybeCacheable());
             styleSheet = CSSStyleSheet::createInline(it->value, e, startPosition);
         }
     } else {
         // FIXME: currently we don't cache StyleSheetContents inQuirksMode.
         styleSheet = StyleEngine::parseSheet(e, text, startPosition, createdByParser);
     }
 
     ASSERT(styleSheet);
     styleSheet->setTitle(e->title());
     return styleSheet;
 }
 
-PassRefPtr<CSSStyleSheet> StyleEngine::parseSheet(Element* e, const String& text, TextPosition startPosition, bool createdByParser)
+PassRefPtrWillBeRawPtr<CSSStyleSheet> StyleEngine::parseSheet(Element* e, const String& text, TextPosition startPosition, bool createdByParser)
 {
-    RefPtr<CSSStyleSheet> styleSheet;
+    RefPtrWillBeRawPtr<CSSStyleSheet> styleSheet;
     styleSheet = CSSStyleSheet::createInline(e, KURL(), startPosition, e->document().inputEncoding());
     styleSheet->contents()->parseStringAtPosition(text, startPosition, createdByParser);
     return styleSheet;
 }
 
 void StyleEngine::removeSheet(StyleSheetContents* contents)
 {
     WillBeHeapHashMap<RawPtrWillBeWeakMember<StyleSheetContents>, AtomicString>::iterator it = sheetToTextCache().find(contents);
     if (it == sheetToTextCache().end())
         return;
 
     textToSheetCache().remove(it->value);
     sheetToTextCache().remove(contents);
 }
 
 void StyleEngine::trace(Visitor* visitor)
 {
     visitor->trace(m_injectedAuthorStyleSheets);
     visitor->trace(m_authorStyleSheets);
+    visitor->trace(m_documentStyleSheetCollection);
+    visitor->trace(m_styleSheetCollectionMap);
 }
 
 }