Oilpan: Build fix after r175007

Source/core/dom/custom/CustomElementMicrotaskQueue.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 49 matching lines @@
     CustomElementMicrotaskQueueBase() { }
     virtual void doDispatch() = 0;
 
     WillBeHeapVector<OwnPtrWillBeMember<CustomElementMicrotaskStep> > m_queue;
 };
 
 class CustomElementMicrotaskQueue : public CustomElementMicrotaskQueueBase {
 public:
     static PassRefPtrWillBeRawPtr<CustomElementMicrotaskQueue> create() { return adoptRefWillBeNoop(new CustomElementMicrotaskQueue()); }
 
-    void enqueue(PassOwnPtr<CustomElementMicrotaskStep>);
+    void enqueue(PassOwnPtrWillBeRawPtr<CustomElementMicrotaskStep>);
 
 private:
     CustomElementMicrotaskQueue() { }
     virtual void doDispatch();
 };
 
 }
 
 #endif // CustomElementMicrotaskQueue_h