Make WebFileSystemCallbacks not self-destruct, deprecate AsyncFileSystem

Source/modules/filesystem/DOMFileSystemSync.h

Index: Source/modules/filesystem/DOMFileSystemSync.h
diff --git a/Source/modules/filesystem/DOMFileSystemSync.h b/Source/modules/filesystem/DOMFileSystemSync.h
index 9c9fd12609290b87c90fbf8d8a56ecba7cfabb4a..440d69b1b645629ccd4af3ab289b64d358161c7c 100644
--- a/Source/modules/filesystem/DOMFileSystemSync.h
+++ b/Source/modules/filesystem/DOMFileSystemSync.h
@@ -44,9 +44,9 @@ class ExceptionState;
 
 class DOMFileSystemSync : public DOMFileSystemBase, public ScriptWrappable {
 public:
-    static PassRefPtr<DOMFileSystemSync> create(ScriptExecutionContext* context, const String& name, FileSystemType type, const KURL& rootURL, PassOwnPtr<AsyncFileSystem> asyncFileSystem)
+    static PassRefPtr<DOMFileSystemSync> create(ScriptExecutionContext* context, const String& name, FileSystemType type, const KURL& rootURL)
     {
-        return adoptRef(new DOMFileSystemSync(context, name, type, rootURL, asyncFileSystem));
+        return adoptRef(new DOMFileSystemSync(context, name, type, rootURL));
     }
 
     static PassRefPtr<DOMFileSystemSync> create(DOMFileSystemBase*);
@@ -59,7 +59,7 @@ public:
     PassRefPtr<FileWriterSync> createWriter(const FileEntrySync*, ExceptionState&);
 
 private:
-    DOMFileSystemSync(ScriptExecutionContext*, const String& name, FileSystemType, const KURL& rootURL, PassOwnPtr<AsyncFileSystem>);
+    DOMFileSystemSync(ScriptExecutionContext*, const String& name, FileSystemType, const KURL& rootURL);
 };
 
 }