Remove ShadowRoot::numberOfStyles().

third_party/WebKit/Source/core/dom/StyleElement.cpp

 /*
  * Copyright (C) 2006, 2007 Rob Buis
  * Copyright (C) 2008 Apple, 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 52 matching lines @@
   DCHECK(element.isConnected());
 
   m_registeredAsCandidate = true;
   document.styleEngine().addStyleSheetCandidateNode(element);
   if (m_createdByParser)
     return ProcessingSuccessful;
 
   return process(element);
 }
 
-void StyleElement::insertedInto(const Element& element,
-                                ContainerNode* insertionPoint) {
-  if (!insertionPoint->isConnected() || !element.isInShadowTree())
-    return;
-  if (ShadowRoot* scope = element.containingShadowRoot())
-    scope->registerScopedHTMLStyleChild();
-}
-
 void StyleElement::removedFrom(Element& element,
                                ContainerNode* insertionPoint) {
   if (!insertionPoint->isConnected())
     return;
 
-  ShadowRoot* shadowRoot = element.containingShadowRoot();
-  if (!shadowRoot)
-    shadowRoot = insertionPoint->containingShadowRoot();
-
-  if (shadowRoot)
-    shadowRoot->unregisterScopedHTMLStyleChild();
-
   Document& document = element.document();
   if (m_registeredAsCandidate) {
+    ShadowRoot* shadowRoot = element.containingShadowRoot();
+    if (!shadowRoot)
+      shadowRoot = insertionPoint->containingShadowRoot();
+
     document.styleEngine().removeStyleSheetCandidateNode(
         element, shadowRoot ? *toTreeScope(shadowRoot) : toTreeScope(document));
     m_registeredAsCandidate = false;
   }
 
   StyleSheet* removedSheet = m_sheet.get();
 
   if (m_sheet)
     clearSheet(element);
   if (removedSheet)
@@ skipping 110 matching lines @@
 
 void StyleElement::startLoadingDynamicSheet(Document& document) {
   document.styleEngine().addPendingSheet(m_styleEngineContext);
 }
 
 DEFINE_TRACE(StyleElement) {
   visitor->trace(m_sheet);
 }
 
 }  // namespace blink