Oilpan: fix build after r182602

Source/bindings/core/v8/V8Binding.h

Index: Source/bindings/core/v8/V8Binding.h
diff --git a/Source/bindings/core/v8/V8Binding.h b/Source/bindings/core/v8/V8Binding.h
index 490a73aa0bfc4804dd3817f5604ffdcd3bedcc37..cf8691578870233128251af39f95bb6464cc3485 100644
--- a/Source/bindings/core/v8/V8Binding.h
+++ b/Source/bindings/core/v8/V8Binding.h
@@ -684,7 +684,7 @@ WillBeHeapVector<RefPtrWillBeMember<T> > toRefPtrWillBeMemberNativeArray(v8::Han
         v8::Handle<v8::Value> element = object->Get(i);
         if (block.HasCaught()) {
             exceptionState.rethrowV8Exception(block.Exception());
-            return Vector<RefPtr<T> >();
+            return WillBeHeapVector<RefPtrWillBeMember<T> >();
         }
         if (V8T::hasInstance(element, isolate)) {
             v8::Handle<v8::Object> elementObject = v8::Handle<v8::Object>::Cast(element);