Remove ShadowRoot::numberOfStyles().

third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc.
  * All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
@@ skipping 155 matching lines @@
 static void collectScopedResolversForHostedShadowTrees(
     const Element& element,
     HeapVector<Member<ScopedStyleResolver>, 8>& resolvers) {
   ElementShadow* shadow = element.shadow();
   if (!shadow)
     return;
 
   // Adding scoped resolver for active shadow roots for shadow host styling.
   for (ShadowRoot* shadowRoot = &shadow->youngestShadowRoot(); shadowRoot;
        shadowRoot = shadowRoot->olderShadowRoot()) {
-    if (shadowRoot->numberOfStyles() > 0) {
-      if (ScopedStyleResolver* resolver = shadowRoot->scopedStyleResolver())
-        resolvers.append(resolver);
-    }
+    if (ScopedStyleResolver* resolver = shadowRoot->scopedStyleResolver())
+      resolvers.append(resolver);
   }
 }
 
 StyleResolver::StyleResolver(Document& document)
     : m_document(document),
       m_viewportStyleResolver(ViewportStyleResolver::create(&document)),
       m_needCollectFeatures(false),
       m_printMediaType(false),
       m_styleSharingDepth(0) {
   FrameView* view = document.view();
@@ skipping 237 matching lines @@
 }
 
 static void matchHostRules(const Element& element,
                            ElementRuleCollector& collector) {
   ElementShadow* shadow = element.shadow();
   if (!shadow)
     return;
 
   for (ShadowRoot* shadowRoot = &shadow->oldestShadowRoot(); shadowRoot;
        shadowRoot = shadowRoot->youngerShadowRoot()) {
-    if (!shadowRoot->numberOfStyles())
-      continue;
     if (ScopedStyleResolver* resolver = shadowRoot->scopedStyleResolver()) {
       collector.clearMatchedRules();
       resolver->collectMatchingShadowHostRules(collector);
       collector.sortAndTransferMatchedRules();
       collector.finishAddingAuthorRulesForTreeScope();
     }
   }
 }
 
 static void matchSlottedRules(const Element& element,
@@ skipping 1499 matching lines @@
   visitor->trace(m_siblingRuleSet);
   visitor->trace(m_uncommonAttributeRuleSet);
   visitor->trace(m_watchedSelectorsRules);
   visitor->trace(m_treeBoundaryCrossingScopes);
   visitor->trace(m_styleSharingLists);
   visitor->trace(m_pendingStyleSheets);
   visitor->trace(m_document);
 }
 
 }  // namespace blink