Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/mediasource/SourceBuffer.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 41 matching lines @@
 class Stream;
 class TimeRanges;
 class WebSourceBuffer;
 
 class SourceBuffer final
     : public RefCountedGarbageCollectedEventTargetWithInlineData<SourceBuffer>
     , public ActiveDOMObject
     , public FileReaderLoaderClient
     , public WebSourceBufferClient {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(SourceBuffer);
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SourceBuffer);
+    USING_GARBAGE_COLLECTED_MIXIN(SourceBuffer);
     DEFINE_WRAPPERTYPEINFO();
 public:
     static SourceBuffer* create(PassOwnPtr<WebSourceBuffer>, MediaSource*, GenericEventQueue*);
     static const AtomicString& segmentsKeyword();
     static const AtomicString& sequenceKeyword();
 
     ~SourceBuffer() override;
 
     // SourceBuffer.idl methods
     const AtomicString& mode() const { return m_mode; }
@@ skipping 56 matching lines @@
 
     // FileReaderLoaderClient interface
     void didStartLoading() override;
     void didReceiveDataForClient(const char* data, unsigned dataLength) override;
     void didFinishLoading() override;
     void didFail(FileError::ErrorCode) override;
 
     OwnPtr<WebSourceBuffer> m_webSourceBuffer;
     Member<MediaSource> m_source;
     Member<TrackDefaultList> m_trackDefaults;
-    RawPtrWillBeMember<GenericEventQueue> m_asyncEventQueue;
+    Member<GenericEventQueue> m_asyncEventQueue;
 
     AtomicString m_mode;
     bool m_updating;
     double m_timestampOffset;
     double m_appendWindowStart;
     double m_appendWindowEnd;
     bool m_firstInitializationSegmentReceived;
 
     Vector<unsigned char> m_pendingAppendData;
     size_t m_pendingAppendDataOffset;
     Member<AsyncMethodRunner<SourceBuffer>> m_appendBufferAsyncPartRunner;
 
     double m_pendingRemoveStart;
     double m_pendingRemoveEnd;
     Member<AsyncMethodRunner<SourceBuffer>> m_removeAsyncPartRunner;
 
     bool m_streamMaxSizeValid;
     unsigned long long m_streamMaxSize;
     Member<AsyncMethodRunner<SourceBuffer>> m_appendStreamAsyncPartRunner;
     Member<Stream> m_stream;
     OwnPtr<FileReaderLoader> m_loader;
 };
 
 } // namespace blink
 
 #endif // SourceBuffer_h