Store nonAttachedStyle on NodeLayoutData instead of on HashMap in Document.

third_party/WebKit/Source/core/dom/Document.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)
@@ skipping 327 matching lines @@
   Element* createElement(const QualifiedName&, CreateElementFlags);
 
   Element* ElementFromPoint(int x, int y) const;
   HeapVector<Member<Element>> ElementsFromPoint(int x, int y) const;
   Range* caretRangeFromPoint(int x, int y);
   Element* scrollingElement();
   // When calling from C++ code, use this method. scrollingElement() is
   // just for the web IDL implementation.
   Element* ScrollingElementNoLayout();
 
-  void AddNonAttachedStyle(const Node&, RefPtr<ComputedStyle>);
-  ComputedStyle* GetNonAttachedStyle(const Node&) const;
-
   String readyState() const;
 
   AtomicString characterSet() const { return Document::EncodingName(); }
 
   AtomicString EncodingName() const;
 
   void SetContent(const String&);
 
   String SuggestedMIMEType() const;
   void SetMimeType(const AtomicString&);
@@ skipping 1089 matching lines @@
   PendingSheetLayout pending_sheet_layout_;
 
   Member<LocalFrame> frame_;
   Member<LocalDOMWindow> dom_window_;
   TraceWrapperMember<HTMLImportsController> imports_controller_;
 
   Member<ResourceFetcher> fetcher_;
   Member<DocumentParser> parser_;
   Member<ContextFeatures> context_features_;
 
-  // This HashMap is used to temporaily store the ComputedStyle generated in the
-  // Style Resolution phase which is used in the Layout Tree construction phase.
-  HeapHashMap<Member<const Node>, RefPtr<ComputedStyle>> non_attached_style_;
-
   bool well_formed_;
 
   // Document URLs.
   KURL url_;  // Document.URL: The URL from which this document was retrieved.
   KURL base_url_;  // Node.baseURI: The URL to use when resolving relative URLs.
   KURL
       base_url_override_;  // An alternative base URL that takes precedence over
                            // m_baseURL (but not m_baseElementURL).
   KURL base_element_url_;  // The URL set by the <base> element.
   KURL cookie_url_;        // The URL to use for cookie access.
@@ skipping 259 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif  // Document_h