Fix %FunctionGetName and %_ClassOf for bound functions.

test/mjsunit/mirror-function.js

 // Copyright 2008 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 70 matching lines @@
 
   // Check the formatted text (regress 1142074).
   assertEquals(f.toString(), fromJSON.text);
 }
 
 
 // Test a number of different functions.
 testFunctionMirror(function(){});
 testFunctionMirror(function a(){return 1;});
 testFunctionMirror(Math.sin);
+testFunctionMirror((function(){}).bind({}), "Object");