Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/filesystem/DOMFileSystem.h

 /*
  * Copyright (C) 2010 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 32 matching lines @@
 
 namespace blink {
 
 class DirectoryEntry;
 class BlobCallback;
 class FileEntry;
 class FileWriterCallback;
 
 class MODULES_EXPORT DOMFileSystem final : public DOMFileSystemBase, public ScriptWrappable, public ActiveDOMObject {
     DEFINE_WRAPPERTYPEINFO();
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMFileSystem);
+    USING_GARBAGE_COLLECTED_MIXIN(DOMFileSystem);
 public:
     static DOMFileSystem* create(ExecutionContext*, const String& name, FileSystemType, const KURL& rootURL);
 
     // Creates a new isolated file system for the given filesystemId.
     static DOMFileSystem* createIsolatedFileSystem(ExecutionContext*, const String& filesystemId);
 
     DirectoryEntry* root() const;
 
     // DOMFileSystemBase overrides.
     void addPendingCallbacks() override;
@@ skipping 143 matching lines @@
 void DOMFileSystem::scheduleCallback(ExecutionContext* executionContext, CB* callback)
 {
     ASSERT(executionContext->isContextThread());
     if (callback)
         executionContext->postTask(BLINK_FROM_HERE, adoptPtr(new DispatchCallbackNoArgTask<CB>(callback)));
 }
 
 } // namespace blink
 
 #endif // DOMFileSystem_h