Remove HTMLLinkElement::m_isInShadowTree member variable

third_party/WebKit/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 63 matching lines @@
     String trimmedType = ContentType(type).type();
     return trimmedType.isEmpty() || MIMETypeRegistry::isSupportedStyleSheetMIMEType(trimmedType);
 }
 
 inline HTMLLinkElement::HTMLLinkElement(Document& document, bool createdByParser)
     : HTMLElement(linkTag, document)
     , m_linkLoader(LinkLoader::create(this))
     , m_sizes(DOMTokenList::create(this))
     , m_relList(RelList::create(this))
     , m_createdByParser(createdByParser)
-    , m_isInShadowTree(false)
 {
 }
 
 HTMLLinkElement* HTMLLinkElement::create(Document& document, bool createdByParser)
 {
     return new HTMLLinkElement(document, createdByParser);
 }
 
 HTMLLinkElement::~HTMLLinkElement()
 {
@@ skipping 42 matching lines @@
     return isConnected();
 }
 
 bool HTMLLinkElement::loadLink(const String& type, const String& as, const String& media, const KURL& url)
 {
     return m_linkLoader->loadLink(m_relAttribute, crossOriginAttributeValue(fastGetAttribute(HTMLNames::crossoriginAttr)), type, as, media, url, document(), NetworkHintsInterfaceImpl());
 }
 
 LinkResource* HTMLLinkElement::linkResourceToProcess()
 {
-    bool visible = isConnected() && !m_isInShadowTree;
+    bool visible = isConnected() && !isInShadowTree();
     if (!visible) {
         ASSERT(!linkStyle() || !linkStyle()->hasSheet());
         return nullptr;
     }
 
     if (!m_link) {
         if (m_relAttribute.isImport()) {
             m_link = LinkImport::create(this);
         } else if (m_relAttribute.isManifest()) {
             m_link = LinkManifest::create(this);
@@ skipping 40 matching lines @@
         link->process();
 }
 
 Node::InsertionNotificationRequest HTMLLinkElement::insertedInto(ContainerNode* insertionPoint)
 {
     HTMLElement::insertedInto(insertionPoint);
     logAddElementIfIsolatedWorldAndInDocument("link", relAttr, hrefAttr);
     if (!insertionPoint->isConnected())
         return InsertionDone;
 
-    m_isInShadowTree = isInShadowTree();
-    if (m_isInShadowTree) {
+    if (isInShadowTree()) {
         String message = "HTML element <link> is ignored in shadow tree.";
         document().addConsoleMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel, message));
         return InsertionDone;
     }
 
     document().styleEngine().addStyleSheetCandidateNode(this);
 
     process();
 
     if (m_link)
         m_link->ownerInserted();
 
     return InsertionDone;
 }
 
 void HTMLLinkElement::removedFrom(ContainerNode* insertionPoint)
 {
+    // Store the result of isInShadowTree() here before Node::removedFrom(..) clears the flags.
+    bool wasInShadowTree = isInShadowTree();
     HTMLElement::removedFrom(insertionPoint);
     if (!insertionPoint->isConnected())
         return;
 
     m_linkLoader->released();
 
-    if (m_isInShadowTree) {
+    if (wasInShadowTree) {
         ASSERT(!linkStyle() || !linkStyle()->hasSheet());
         return;
     }
     document().styleEngine().removeStyleSheetCandidateNode(this);
 
     StyleSheet* removedSheet = sheet();
 
     if (m_link)
         m_link->ownerRemoved();
 
@@ skipping 484 matching lines @@
 }
 
 DEFINE_TRACE(LinkStyle)
 {
     visitor->trace(m_sheet);
     LinkResource::trace(visitor);
     ResourceOwner<StyleSheetResource>::trace(visitor);
 }
 
 } // namespace blink