Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/mediastream/MediaStream.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011 Ericsson AB. 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 83 matching lines @@
 
     // ContextLifecycleObserver
     void contextDestroyed() override;
 
     // MediaStreamDescriptorClient
     void addRemoteTrack(MediaStreamComponent*) override;
     void removeRemoteTrack(MediaStreamComponent*) override;
 
     bool emptyOrOnlyEndedTracks();
 
-    void scheduleDispatchEvent(PassRefPtrWillBeRawPtr<Event>);
+    void scheduleDispatchEvent(RawPtr<Event>);
     void scheduledEventTimerFired(Timer<MediaStream>*);
 
     bool m_stopped;
 
     MediaStreamTrackVector m_audioTracks;
     MediaStreamTrackVector m_videoTracks;
     Member<MediaStreamDescriptor> m_descriptor;
 
     Timer<MediaStream> m_scheduledEventTimer;
-    WillBeHeapVector<RefPtrWillBeMember<Event>> m_scheduledEvents;
+    HeapVector<Member<Event>> m_scheduledEvents;
 };
 
 typedef HeapVector<Member<MediaStream>> MediaStreamVector;
 
 } // namespace blink
 
 #endif // MediaStream_h