Use StyleEngine::resetAuthorStyle instead of clearScopedStyleResolver.

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

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007 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 15 matching lines @@
 #include "core/dom/TreeScope.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class HTMLStyleElement;
 class StyleSheet;
 
-class StyleSheetList final : public GarbageCollected<StyleSheetList>,
-                             public ScriptWrappable {
+class CORE_EXPORT StyleSheetList final
+    : public GarbageCollected<StyleSheetList>,
+      public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static StyleSheetList* create(TreeScope* treeScope) {
     return new StyleSheetList(treeScope);
   }
 
   unsigned length();
   StyleSheet* item(unsigned index);
 
@@ skipping 10 matching lines @@
  private:
   explicit StyleSheetList(TreeScope*);
   const HeapVector<TraceWrapperMember<StyleSheet>>& styleSheets() const;
 
   Member<TreeScope> m_treeScope;
 };
 
 }  // namespace blink
 
 #endif  // StyleSheetList_h