Add toImplSequence()

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

Index: third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.cpp b/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.cpp
index 6139058a7107d9839bb5736cf8e6be2003410fa5..6e283576e15ba58023de5ebb1b1a2eaff5dc2c0f 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.cpp
@@ -138,8 +138,8 @@ bool ScriptCustomElementDefinitionBuilder::retrieveObservedAttributes()
         return false;
     if (observedAttributesValue->IsUndefined())
         return true;
-    Vector<AtomicString> list = toImplArray<Vector<AtomicString>>(
-        observedAttributesValue, 0, m_scriptState->isolate(), m_exceptionState);
+    Vector<AtomicString> list = toImplSequence<Vector<AtomicString>>(
+        m_scriptState->isolate(), observedAttributesValue, m_exceptionState);
     if (m_exceptionState.hadException())
         return false;
     if (list.isEmpty())