Remove ShadowRoot::numberOfStyles().

third_party/WebKit/Source/core/dom/shadow/ShadowRoot.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 39 matching lines @@
   unsigned countersAndFlags[1];
 };
 
 static_assert(sizeof(ShadowRoot) == sizeof(SameSizeAsShadowRoot),
               "ShadowRoot should stay small");
 
 ShadowRoot::ShadowRoot(Document& document, ShadowRootType type)
     : DocumentFragment(0, CreateShadowRoot),
       TreeScope(*this, document),
       m_styleSheetList(nullptr),
-      m_numberOfStyles(0),
       m_childShadowRootCount(0),
       m_type(static_cast<unsigned>(type)),
       m_registeredWithParentShadowRoot(false),
       m_descendantInsertionPointsIsValid(false),
       m_delegatesFocus(false) {}
 
 ShadowRoot::~ShadowRoot() {}
 
 ShadowRoot* ShadowRoot::youngerShadowRoot() const {
   if (type() == ShadowRootType::V0 && m_shadowRootRareDataV0)
@@ skipping 127 matching lines @@
                                       : SiblingElementInserted,
         toElement(change.siblingChanged), change.siblingBeforeChange,
         change.siblingAfterChange);
 
   if (InsertionPoint* point = shadowInsertionPointOfYoungerShadowRoot()) {
     if (ShadowRoot* root = point->containingShadowRoot())
       root->owner()->setNeedsDistributionRecalc();
   }
 }
 
-void ShadowRoot::registerScopedHTMLStyleChild() {
-  ++m_numberOfStyles;
-}
-
-void ShadowRoot::unregisterScopedHTMLStyleChild() {
-  DCHECK_GT(m_numberOfStyles, 0u);
-  --m_numberOfStyles;
-}
-
 ShadowRootRareDataV0& ShadowRoot::ensureShadowRootRareDataV0() {
   if (m_shadowRootRareDataV0)
     return *m_shadowRootRareDataV0;
 
   m_shadowRootRareDataV0 = new ShadowRootRareDataV0;
   return *m_shadowRootRareDataV0;
 }
 
 bool ShadowRoot::containsShadowElements() const {
   return m_shadowRootRareDataV0
@@ skipping 99 matching lines @@
       ostream << "ShadowRootType::Open";
       break;
     case ShadowRootType::Closed:
       ostream << "ShadowRootType::Closed";
       break;
   }
   return ostream;
 }
 
 }  // namespace blink