Oilpan: fix build after r352251.

third_party/WebKit/Source/bindings/core/v8/RejectedPromises.h

Index: third_party/WebKit/Source/bindings/core/v8/RejectedPromises.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/RejectedPromises.h b/third_party/WebKit/Source/bindings/core/v8/RejectedPromises.h
index 61212574d23ad83f85d3acfeba7396922a176d79..76c67b740f16e6faf8c5ddb6f229de693fd60d00 100644
--- a/third_party/WebKit/Source/bindings/core/v8/RejectedPromises.h
+++ b/third_party/WebKit/Source/bindings/core/v8/RejectedPromises.h
@@ -37,10 +37,14 @@ public:
 private:
     class Message;
 
-    void processQueueNow(PassOwnPtrWillBeRawPtr<WillBeHeapDeque<OwnPtrWillBeMember<Message>>>);
+    using MessageQueue = WillBeHeapDeque<OwnPtrWillBeMember<Message>>;
+
+    PassOwnPtrWillBeRawPtr<MessageQueue> createMessageQueue();
+
+    void processQueueNow(PassOwnPtrWillBeRawPtr<MessageQueue>);
     void revokeNow(PassOwnPtrWillBeRawPtr<Message>);
 
-    WillBeHeapDeque<OwnPtrWillBeMember<Message>> m_queue;
+    MessageQueue m_queue;
     WillBeHeapVector<OwnPtrWillBeMember<Message>> m_reportedAsErrors;
 };