Remove global list map of TreeScope to StyleSheetCollection.

sky/engine/core/dom/StyleEngine.h

 /*
  * 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, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 12 matching lines @@
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef SKY_ENGINE_CORE_DOM_STYLEENGINE_H_
 #define SKY_ENGINE_CORE_DOM_STYLEENGINE_H_
 
 #include "sky/engine/core/css/CSSFontSelectorClient.h"
 #include "sky/engine/core/css/resolver/StyleResolver.h"
-#include "sky/engine/core/dom/Document.h"
-#include "sky/engine/core/dom/DocumentOrderedList.h"
-#include "sky/engine/core/dom/StyleSheetCollection.h"
-#include "sky/engine/platform/heap/Handle.h"
 #include "sky/engine/wtf/FastAllocBase.h"
 #include "sky/engine/wtf/ListHashSet.h"
 #include "sky/engine/wtf/RefPtr.h"
 #include "sky/engine/wtf/TemporaryChange.h"
 #include "sky/engine/wtf/Vector.h"
 #include "sky/engine/wtf/text/WTFString.h"
 
 namespace blink {
 
 class CSSFontSelector;
 class CSSStyleSheet;
+class Document;
 class Node;
 class RuleFeatureSet;
 class StyleRuleFontFace;
 class StyleSheetContents;
 
 class StyleEngine final : public CSSFontSelectorClient  {
     WTF_MAKE_FAST_ALLOCATED;
 public:
 
     class IgnoringPendingStylesheet : public TemporaryChange<bool> {
     public:
         IgnoringPendingStylesheet(StyleEngine* engine)
             : TemporaryChange<bool>(engine->m_ignorePendingStylesheets, true)
         {
         }
     };
 
     friend class IgnoringPendingStylesheet;
 
     static PassOwnPtr<StyleEngine> create(Document& document) { return adoptPtr(new StyleEngine(document)); }
 
     ~StyleEngine();
 
     void detachFromDocument();
 
-    const Vector<RefPtr<CSSStyleSheet>>& activeAuthorStyleSheetsFor(TreeScope&);
-
     void addStyleSheetCandidateNode(Node*, bool createdByParser);
     void removeStyleSheetCandidateNode(Node*, ContainerNode* scopingNode, TreeScope&);
 
     void updateActiveStyleSheets();
 
     bool ignoringPendingStylesheets() const { return m_ignorePendingStylesheets; }
 
     // FIXME(sky): Remove this and ::first-line.
     bool usesFirstLineRules() const { return false; }
 
-    void didRemoveShadowRoot(ShadowRoot*);
     void appendActiveAuthorStyleSheets();
 
     StyleResolver* resolver() const
     {
         return m_resolver.get();
     }
 
     StyleResolver& ensureResolver()
     {
         if (!m_resolver) {
@@ skipping 20 matching lines @@
     PassRefPtr<CSSStyleSheet> createSheet(Element*, const String& text);
     void removeSheet(StyleSheetContents*);
 
     void collectScopedStyleFeaturesTo(RuleFeatureSet&) const;
 
 private:
     // CSSFontSelectorClient implementation.
     virtual void fontsNeedUpdate(CSSFontSelector*) override;
 
 private:
-    StyleEngine(Document&);
-
-    StyleSheetCollection* ensureStyleSheetCollectionFor(TreeScope&);
-    StyleSheetCollection* styleSheetCollectionFor(TreeScope&);
+    explicit StyleEngine(Document&);
 
     void createResolver();
 
-    const StyleSheetCollection* documentStyleSheetCollection() const
-    {
-        return m_documentStyleSheetCollection.get();
-    }
-
-    StyleSheetCollection* documentStyleSheetCollection()
-    {
-        return m_documentStyleSheetCollection.get();
-    }
-
     RawPtr<Document> m_document;
 
-    // TODO(esprehn): Remove special separate collection for document.
-    OwnPtr<StyleSheetCollection> m_documentStyleSheetCollection;
-
-    typedef HashMap<RawPtr<TreeScope>, OwnPtr<StyleSheetCollection> > StyleSheetCollectionMap;
-    StyleSheetCollectionMap m_styleSheetCollectionMap;
-
     typedef ListHashSet<TreeScope*, 16> TreeScopeSet;
     TreeScopeSet m_activeTreeScopes;
 
     bool m_ignorePendingStylesheets;
     OwnPtr<StyleResolver> m_resolver;
 
     RefPtr<CSSFontSelector> m_fontSelector;
 
     HashMap<AtomicString, StyleSheetContents*> m_textToSheetCache;
     HashMap<StyleSheetContents*, AtomicString> m_sheetToTextCache;
 };
 
 }
 
 #endif  // SKY_ENGINE_CORE_DOM_STYLEENGINE_H_