bindings: Port bindings/core/v8 away from ToImplArray APIs.

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/IDLTypes.h"
+#include "bindings/core/v8/NativeValueTraitsImpl.h"
 #include "bindings/core/v8/ScriptCustomElementDefinition.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8BindingMacros.h"
 #include "core/dom/ExceptionCode.h"
 
 namespace blink {
 
 ScriptCustomElementDefinitionBuilder*
@@ skipping 102 matching lines @@
   return true;
 }
 
 bool ScriptCustomElementDefinitionBuilder::RetrieveObservedAttributes() {
   v8::Local<v8::Value> observed_attributes_value;
   if (!ValueForName(constructor_, "observedAttributes",
                     observed_attributes_value))
     return false;
   if (observed_attributes_value->IsUndefined())
     return true;
-  Vector<AtomicString> list = ToImplSequence<Vector<AtomicString>>(
+  Vector<String> list = NativeValueTraits<IDLSequence<IDLString>>::NativeValue(
       script_state_->GetIsolate(), observed_attributes_value, exception_state_);
   if (exception_state_.HadException())
     return false;
   if (list.IsEmpty())
     return true;
   observed_attributes_.ReserveCapacityForSize(list.size());
   for (const auto& attribute : list)
-    observed_attributes_.insert(attribute);
+    observed_attributes_.insert(AtomicString(attribute));
   return true;
 }
 
 bool ScriptCustomElementDefinitionBuilder::RememberOriginalProperties() {
   // Spec requires to use values of these properties at the point
   // CustomElementDefinition is built, even if JS changes them afterwards.
   return CallableForName("connectedCallback", connected_callback_) &&
          CallableForName("disconnectedCallback", disconnected_callback_) &&
          CallableForName("adoptedCallback", adopted_callback_) &&
          CallableForName("attributeChangedCallback",
                          attribute_changed_callback_) &&
          (attribute_changed_callback_.IsEmpty() ||
           RetrieveObservedAttributes());
 }
 
 CustomElementDefinition* ScriptCustomElementDefinitionBuilder::Build(
     const CustomElementDescriptor& descriptor) {
   return ScriptCustomElementDefinition::Create(
       script_state_.Get(), registry_, descriptor, constructor_,
       connected_callback_, disconnected_callback_, adopted_callback_,
       attribute_changed_callback_, observed_attributes_);
 }
 
 }  // namespace blink