Remove CSSInitialValue::createLegacyImplicit()

third_party/WebKit/Source/core/css/CSSInitialValue.h

Index: third_party/WebKit/Source/core/css/CSSInitialValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSInitialValue.h b/third_party/WebKit/Source/core/css/CSSInitialValue.h
index 475019f832a7278a6af64011cb7a4d346b718b95..d203c1c965aac5b666cf07de5c45a63a4f8fb2bd 100644
--- a/third_party/WebKit/Source/core/css/CSSInitialValue.h
+++ b/third_party/WebKit/Source/core/css/CSSInitialValue.h
@@ -29,12 +29,9 @@ namespace blink {
 class CSSInitialValue : public CSSValue {
  public:
   static CSSInitialValue* create();
-  static CSSInitialValue* createLegacyImplicit();  // crbug.com/471917
 
   String customCSSText() const;
 
-  bool isImplicit() const { return m_isImplicit; }
-
   bool equals(const CSSInitialValue&) const { return true; }
 
   DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
@@ -44,10 +41,7 @@ class CSSInitialValue : public CSSValue {
  private:
   friend class CSSValuePool;
 
-  explicit CSSInitialValue(bool implicit)
-      : CSSValue(InitialClass), m_isImplicit(implicit) {}
-
-  bool m_isImplicit;
+  CSSInitialValue() : CSSValue(InitialClass) {}
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSInitialValue, isInitialValue());