Get rid of [Callback] extended attribute for parameters in IDL files

Source/modules/filesystem/Entry.idl

Index: Source/modules/filesystem/Entry.idl
diff --git a/Source/modules/filesystem/Entry.idl b/Source/modules/filesystem/Entry.idl
index 4f4a316c5ea29d6037cf9567e32b8dfaa53d64f5..e6638abfbc3a0609fae25e2c12c8ae7a6b1d9c8f 100644
--- a/Source/modules/filesystem/Entry.idl
+++ b/Source/modules/filesystem/Entry.idl
@@ -37,10 +37,10 @@
     readonly attribute DOMString fullPath;
     readonly attribute DOMFileSystem filesystem;
 
-    void getMetadata([Callback] MetadataCallback successCallback, [Callback] optional ErrorCallback errorCallback);
-    void moveTo(DirectoryEntry parent, [TreatNullAs=NullString, TreatUndefinedAs=NullString] optional DOMString name, [Callback] optional EntryCallback successCallback, [Callback] optional ErrorCallback errorCallback);
-    void copyTo(DirectoryEntry parent, [TreatNullAs=NullString, TreatUndefinedAs=NullString] optional DOMString name, [Callback] optional EntryCallback successCallback, [Callback] optional ErrorCallback errorCallback);
+    void getMetadata(MetadataCallback successCallback, optional ErrorCallback errorCallback);
+    void moveTo(DirectoryEntry parent, [TreatNullAs=NullString, TreatUndefinedAs=NullString] optional DOMString name, optional EntryCallback successCallback, optional ErrorCallback errorCallback);
+    void copyTo(DirectoryEntry parent, [TreatNullAs=NullString, TreatUndefinedAs=NullString] optional DOMString name, optional EntryCallback successCallback, optional ErrorCallback errorCallback);
     DOMString toURL();
-    void remove([Callback] VoidCallback successCallback, [Callback] optional ErrorCallback errorCallback);
-    void getParent([Callback] optional EntryCallback successCallback, [Callback] optional ErrorCallback errorCallback);
+    void remove(VoidCallback successCallback, optional ErrorCallback errorCallback);
+    void getParent(optional EntryCallback successCallback, optional ErrorCallback errorCallback);
 };