Fix "report the exception" in Custom Elements V1

third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinition.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ScriptCustomElementDefinition_h
 #define ScriptCustomElementDefinition_h
 
 #include "bindings/core/v8/ScopedPersistent.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/CoreExport.h"
@@ skipping 29 matching lines @@
         const HashSet<AtomicString>& observedAttributes);
 
     virtual ~ScriptCustomElementDefinition() = default;
 
     v8::Local<v8::Object> constructor() const;
     v8::Local<v8::Object> prototype() const;
 
     HTMLElement* createElementSync(Document&, const QualifiedName&) override;
     HTMLElement* createElementSync(Document&, const QualifiedName&, ExceptionState&) override;
 
-    void fireErrorEvent(
-        ScriptState*,
-        const String& message,
-        v8::Local<v8::Value> exception,
-        std::unique_ptr<SourceLocation>);
-
     bool hasConnectedCallback() const override;
     bool hasDisconnectedCallback() const override;
     bool hasAdoptedCallback() const override;
 
     void runConnectedCallback(Element*) override;
     void runDisconnectedCallback(Element*) override;
     void runAdoptedCallback(Element*) override;
     void runAttributeChangedCallback(Element*, const QualifiedName&,
         const AtomicString& oldValue, const AtomicString& newValue) override;
 
@@ skipping 22 matching lines @@
     ScopedPersistent<v8::Object> m_prototype;
     ScopedPersistent<v8::Function> m_connectedCallback;
     ScopedPersistent<v8::Function> m_disconnectedCallback;
     ScopedPersistent<v8::Function> m_adoptedCallback;
     ScopedPersistent<v8::Function> m_attributeChangedCallback;
 };
 
 } // namespace blink
 
 #endif // ScriptCustomElementDefinition_h