[Binding] Delete hasInstance() from ArrayBuffer related interfaces

third_party/WebKit/Source/web/WebArrayBufferConverter.cpp

Index: third_party/WebKit/Source/web/WebArrayBufferConverter.cpp
diff --git a/third_party/WebKit/Source/web/WebArrayBufferConverter.cpp b/third_party/WebKit/Source/web/WebArrayBufferConverter.cpp
index 4235910392403a8c4cf1d1c6b0a0bf30af51e7ce..cb095326e8b3f4df5f30614e559745738613b9cb 100644
--- a/third_party/WebKit/Source/web/WebArrayBufferConverter.cpp
+++ b/third_party/WebKit/Source/web/WebArrayBufferConverter.cpp
@@ -44,10 +44,10 @@ v8::Local<v8::Value> WebArrayBufferConverter::toV8Value(WebArrayBuffer* buffer,
     return toV8(*buffer, isolate->GetCurrentContext()->Global(), isolate);
 }
 
-WebArrayBuffer* WebArrayBufferConverter::createFromV8Value(v8::Local<v8::Value> value, v8::Isolate* isolate)
+WebArrayBuffer* WebArrayBufferConverter::createFromV8Value(v8::Local<v8::Value> value, v8::Isolate*)
 {
-    if (!V8ArrayBuffer::hasInstance(value, isolate))
-        return 0;
+    if (!value->IsArrayBuffer())
+        return nullptr;
     return new WebArrayBuffer(V8ArrayBuffer::toImpl(value.As<v8::Object>()));
 }