[debugger] Add JSProxy support in Runtime::GetInternalProperties

test/mjsunit/mirror-object.js

 // Copyright 2012 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 247 matching lines @@
 }
 assertTrue("[[BoundThis]]" in property_map);
 assertEquals("function", property_map["[[BoundThis]]"].value().type());
 assertEquals(Array, property_map["[[BoundThis]]"].value().value());
 assertTrue("[[TargetFunction]]" in property_map);
 assertEquals("function", property_map["[[TargetFunction]]"].value().type());
 assertEquals(Number, property_map["[[TargetFunction]]"].value().value());
 assertTrue("[[BoundArgs]]" in property_map);
 assertEquals("object", property_map["[[BoundArgs]]"].value().type());
 assertEquals(1, property_map["[[BoundArgs]]"].value().value().length);
+
+// Test JSProxy internal properties.
+var target = {};
+var handler = {
+  get: function (target, name, receiver) {
+    return target[name];
+  },
+  set: function(target, name, value, receiver) {
+    target[name] = value;
+    return value;
+  }
+}
+ip = debug.ObjectMirror.GetInternalProperties(new Proxy(target, handler));
+assertEquals(3, ip.length);
+var property_map = {};
+for (var i = 0; i < ip.length; i++) {
+  property_map[ip[i].name()] = ip[i];
+}
+assertTrue("[[Target]]" in property_map);
+assertEquals(target, property_map["[[Target]]"].value().value());
+assertTrue("[[Handler]]" in property_map);
+assertEquals(handler, property_map["[[Handler]]"].value().value());
+assertTrue("[[IsRevoked]]" in property_map);
+assertEquals(false, property_map["[[IsRevoked]]"].value().value());