Enable Oilpan by default in modules/filesystem/

Source/modules/filesystem/FileEntry.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 24 matching lines @@
 #include "platform/heap/Handle.h"
 
 namespace WebCore {
 
 class DOMFileSystemBase;
 class FileCallback;
 class FileWriterCallback;
 
 class FileEntry FINAL : public Entry {
 public:
-    static PassRefPtrWillBeRawPtr<FileEntry> create(PassRefPtrWillBeRawPtr<DOMFileSystemBase> fileSystem, const String& fullPath)
+    static FileEntry* create(DOMFileSystemBase* fileSystem, const String& fullPath)
     {
-        return adoptRefWillBeNoop(new FileEntry(fileSystem, fullPath));
+        return new FileEntry(fileSystem, fullPath);
     }
 
     void createWriter(PassOwnPtr<FileWriterCallback>, PassOwnPtr<ErrorCallback> = nullptr);
     void file(PassOwnPtr<FileCallback>, PassOwnPtr<ErrorCallback> = nullptr);
 
     virtual bool isFile() const OVERRIDE { return true; }
 
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
-    FileEntry(PassRefPtrWillBeRawPtr<DOMFileSystemBase>, const String& fullPath);
+    FileEntry(DOMFileSystemBase*, const String& fullPath);
 };
 
 DEFINE_TYPE_CASTS(FileEntry, Entry, entry, entry->isFile(), entry.isFile());
 
 } // namespace
 
 #endif // FileEntry_h