Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/nfc/NFC.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NFC_h
 #define NFC_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/modules/v8/UnionTypesModules.h"
 #include "core/frame/LocalFrameLifecycleObserver.h"
 #include "core/page/PageLifecycleObserver.h"
 
 namespace blink {
 
 class MessageCallback;
 class NFCPushOptions;
 using NFCPushMessage = StringOrArrayBufferOrNFCMessage;
 class NFCWatchOptions;
 
 class NFC final
     : public GarbageCollectedFinalized<NFC>
     , public ScriptWrappable
     , public LocalFrameLifecycleObserver
     , public PageLifecycleObserver {
     DEFINE_WRAPPERTYPEINFO();
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NFC);
+    USING_GARBAGE_COLLECTED_MIXIN(NFC);
 
 public:
     static NFC* create(LocalFrame*);
 #if !ENABLE(OILPAN)
     ~NFC() override = default;
 #endif
 
     // Pushes NFCPushMessage asynchronously to NFC tag / peer.
     ScriptPromise push(ScriptState*, const NFCPushMessage&, const NFCPushOptions&);
 
@@ skipping 18 matching lines @@
     // Interface required by garbage collection.
     DECLARE_VIRTUAL_TRACE();
 
 private:
     NFC(LocalFrame*);
 };
 
 } // namespace blink
 
 #endif // NFC_h