Oilpan: Remove most WillBe types from the code base

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

 /*
  * Copyright (C) 2012 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 27 matching lines @@
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 class RTCPeerConnection;
 class RTCPeerConnectionErrorCallback;
 class RTCSessionDescriptionCallback;
 class WebRTCSessionDescription;
 
 class RTCSessionDescriptionRequestImpl final : public RTCSessionDescriptionRequest, public ActiveDOMObject {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(RTCSessionDescriptionRequestImpl);
+    USING_GARBAGE_COLLECTED_MIXIN(RTCSessionDescriptionRequestImpl);
 public:
     static RTCSessionDescriptionRequestImpl* create(ExecutionContext*, RTCPeerConnection*, RTCSessionDescriptionCallback*, RTCPeerConnectionErrorCallback*);
     ~RTCSessionDescriptionRequestImpl() override;
 
     void requestSucceeded(const WebRTCSessionDescription&) override;
     void requestFailed(const String& error) override;
 
     // ActiveDOMObject
     void stop() override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     RTCSessionDescriptionRequestImpl(ExecutionContext*, RTCPeerConnection*, RTCSessionDescriptionCallback*, RTCPeerConnectionErrorCallback*);
 
     void clear();
 
     Member<RTCSessionDescriptionCallback> m_successCallback;
     Member<RTCPeerConnectionErrorCallback> m_errorCallback;
     Member<RTCPeerConnection> m_requester;
 };
 
 } // namespace blink
 
 #endif // RTCSessionDescriptionRequestImpl_h