Add a debugger test for closure breakpoints

tests/standalone/debugger/debug_lib.dart

 // Copyright (c) 2013, 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.
 
 // Library used by debugger wire protocol tests (standalone VM debugging).
 
 library DartDebugger;
 
 import "dart:async";
 import "dart:io";
@@ skipping 223 matching lines @@
 }
 
 
 class RunCommand extends Command {
   RunCommand.resume() {
     template = {"id": 0, "command": "resume", "params": {"isolateId": 0}};
   }
   RunCommand.step() {
     template = {"id": 0, "command": "stepOver", "params": {"isolateId": 0}};
   }
+  RunCommand.stepInto() {
+    template = {"id": 0, "command": "stepInto", "params": {"isolateId": 0}};
+  }
+  RunCommand.stepOut() {
+    template = {"id": 0, "command": "stepOut", "params": {"isolateId": 0}};
+  }
   void send(Debugger debugger) {
     debugger.sendMessage(template);
     debugger.isPaused = false;
   }
 }
 
 
 Resume() => new RunCommand.resume();
 Step() => new RunCommand.step();
-
+StepInto() => new RunCommand.stepInto();
+StepOut() => new RunCommand.stepOut();
 
 class SetBreakpointCommand extends Command {
   int line;
   SetBreakpointCommand(int this.line) {
     template = {"id": 0,
                 "command": "setBreakpoint",
                 "params": { "isolateId": 0,
                             "url": null,
                             "line": null }};
   }
@@ skipping 270 matching lines @@
         var trace = getAttachedStackTrace(e);
         if (trace != null) print("StackTrace: $trace");
         return -1; 
       } else {
         // Retry with another random port.
         RunScript(script);
       }
     });
   return true;
 }