Make WebFileSystemCallbacks not self-destruct, deprecate AsyncFileSystem

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 29 matching lines @@
 namespace WebCore {
 
 class DirectoryEntry;
 class File;
 class FileCallback;
 class FileEntry;
 class FileWriterCallback;
 
 class DOMFileSystem : public DOMFileSystemBase, public ScriptWrappable, public ActiveDOMObject {
 public:
-    static PassRefPtr<DOMFileSystem> create(ScriptExecutionContext*, const String& name, FileSystemType, const KURL& rootURL, PassOwnPtr<AsyncFileSystem>);
+    static PassRefPtr<DOMFileSystem> create(ScriptExecutionContext*, const String& name, FileSystemType, const KURL& rootURL);
 
     // Creates a new isolated file system for the given filesystemId.
     static PassRefPtr<DOMFileSystem> createIsolatedFileSystem(ScriptExecutionContext*, const String& filesystemId);
 
     PassRefPtr<DirectoryEntry> root();
 
     // ActiveDOMObject methods.
     virtual void stop();
     virtual bool hasPendingActivity() const;
     virtual void contextDestroyed();
@@ skipping 15 matching lines @@
         scheduleCallback(scriptExecutionContext(), callback, callbackArg);
     }
 
     template <typename CB, typename CBArg>
     void scheduleCallback(PassRefPtr<CB> callback,  const CBArg& callbackArg)
     {
         scheduleCallback(scriptExecutionContext(), callback, callbackArg);
     }
 
 private:
-    DOMFileSystem(ScriptExecutionContext*, const String& name, FileSystemType, const KURL& rootURL, PassOwnPtr<AsyncFileSystem>);
+    DOMFileSystem(ScriptExecutionContext*, const String& name, FileSystemType, const KURL& rootURL);
 
     // A helper template to schedule a callback task.
     template <typename CB, typename CBArg>
     class DispatchCallbacRefPtrArgTask : public ScriptExecutionContext::Task {
     public:
         DispatchCallbacRefPtrArgTask(PassRefPtr<CB> callback, PassRefPtr<CBArg> arg)
             : m_callback(callback)
             , m_callbackArg(arg)
         {
         }
@@ skipping 40 matching lines @@
 void DOMFileSystem::scheduleCallback(ScriptExecutionContext* scriptExecutionContext, PassRefPtr<CB> callback, const CBArg& arg)
 {
     ASSERT(scriptExecutionContext->isContextThread());
     if (callback)
         scriptExecutionContext->postTask(adoptPtr(new DispatchCallbackNonPtrArgTask<CB, CBArg>(callback, arg)));
 }
 
 } // namespace
 
 #endif // DOMFileSystem_h