Retrieve prototype during custom element construction.

third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.cpp

 // 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.
 
 #include "bindings/core/v8/ScriptCustomElementDefinitionBuilder.h"
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptCustomElementDefinition.h"
 #include "bindings/core/v8/ScriptState.h"
@@ skipping 136 matching lines @@
          callableForName("disconnectedCallback", m_disconnectedCallback) &&
          callableForName("adoptedCallback", m_adoptedCallback) &&
          callableForName("attributeChangedCallback",
                          m_attributeChangedCallback) &&
          (m_attributeChangedCallback.IsEmpty() || retrieveObservedAttributes());
 }
 
 CustomElementDefinition* ScriptCustomElementDefinitionBuilder::build(
     const CustomElementDescriptor& descriptor) {
   return ScriptCustomElementDefinition::create(
-      m_scriptState.get(), m_registry, descriptor, m_constructor, m_prototype,
+      m_scriptState.get(), m_registry, descriptor, m_constructor,
       m_connectedCallback, m_disconnectedCallback, m_adoptedCallback,
       m_attributeChangedCallback, m_observedAttributes);
 }
 
 }  // namespace blink