Add thread affinity and ASSERT() for same-thread restriction to WTF::Function

third_party/WebKit/Source/modules/filesystem/LocalFileSystem.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 57 matching lines @@
     {
         WillBeHeapSupplement<LocalFrame>::trace(visitor);
         WillBeHeapSupplement<WorkerClients>::trace(visitor);
     }
 
 protected:
     explicit LocalFileSystem(PassOwnPtr<FileSystemClient>);
 
 private:
     WebFileSystem* fileSystem() const;
-    void requestFileSystemAccessInternal(ExecutionContext*, PassOwnPtr<Closure> allowed, PassOwnPtr<Closure> denied);
+    void requestFileSystemAccessInternal(ExecutionContext*, PassOwnPtr<SameThreadClosure> allowed, PassOwnPtr<SameThreadClosure> denied);
     void fileSystemNotAvailable(PassRefPtrWillBeRawPtr<ExecutionContext>, CallbackWrapper*);
     void fileSystemNotAllowedInternal(PassRefPtrWillBeRawPtr<ExecutionContext>, CallbackWrapper*);
     void fileSystemAllowedInternal(PassRefPtrWillBeRawPtr<ExecutionContext>, FileSystemType, CallbackWrapper*);
     void resolveURLInternal(PassRefPtrWillBeRawPtr<ExecutionContext>, const KURL&, CallbackWrapper*);
     void deleteFileSystemInternal(PassRefPtrWillBeRawPtr<ExecutionContext>, FileSystemType, CallbackWrapper*);
     OwnPtr<FileSystemClient> m_client;
 };
 
 } // namespace blink
 
 #endif // LocalFileSystem_h