Add Debugger.inspect. 1976 here we come!

tests/lib/developer/inspect_test.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'dart:developer';
 import 'package:expect/expect.dart';
 
-class T {
-  A foo(int x) {}
+class Point {
+  int x, y;
+  Point(this.x, this.y);
 }
 
-class A{}
-
-typedef A F(int x);
-
-use(x) => x;
-
-runTest() {
-  use(new A());
-  Expect.isTrue(new T().foo is F);
+void main() {
+  var p_in = new Point(3, 4);
+  var p_out = inspect(p_in);
+  Expect.isTrue(identical(p_in, p_out));
 }