Added handles to the mirror objects. When a mirror for an object is created...

test/mjsunit/mirror-script.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 13 matching lines @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --expose-debug-as debug
 // Test the mirror object for scripts.
 
 function testScriptMirror(f, file_name, file_lines, script_type) {
   // Create mirror and JSON representation.
   var mirror = debug.MakeMirror(f).script();
-  var json = mirror.toJSONProtocol(true);
-  print(json);
+  var serializer = debug.MakeMirrorSerializer();
+  var json = serializer.serializeValue(mirror);
 
   // Check the mirror hierachy.
   assertTrue(mirror instanceof debug.Mirror);
   assertFalse(mirror instanceof debug.ValueMirror);
   assertTrue(mirror instanceof debug.ScriptMirror);
 
   // Check the mirror properties.
   assertTrue(mirror.isScript());
   assertEquals('script', mirror.type());
   var name = mirror.name();
@@ skipping 15 matching lines @@
   if (file_lines > 0) {
     assertEquals(file_lines, fromJSON.lineCount);
   }
   assertEquals(script_type, fromJSON.scriptType);  
 }
 
 
 // Test the script mirror for different functions.
 testScriptMirror(function(){}, 'mirror-script.js', 70, 2);
 testScriptMirror(Math.sin, 'native math.js', -1, 0);