Remove ShadowRoot::numberOfStyles().

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

Index: third_party/WebKit/Source/core/dom/shadow/ShadowRoot.cpp
diff --git a/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.cpp b/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.cpp
index d83f657479a485ca74ebbbeae690c675c3dcf2c0..fad2a8a0642d040e088ab104eaa8a8e0aeb3a67a 100644
--- a/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.cpp
+++ b/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.cpp
@@ -57,7 +57,6 @@ 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),
@@ -205,15 +204,6 @@ void ShadowRoot::childrenChanged(const ChildrenChange& change) {
   }
 }
 
-void ShadowRoot::registerScopedHTMLStyleChild() {
-  ++m_numberOfStyles;
-}
-
-void ShadowRoot::unregisterScopedHTMLStyleChild() {
-  DCHECK_GT(m_numberOfStyles, 0u);
-  --m_numberOfStyles;
-}
-
 ShadowRootRareDataV0& ShadowRoot::ensureShadowRootRareDataV0() {
   if (m_shadowRootRareDataV0)
     return *m_shadowRootRareDataV0;