test.py: Sending JSON between test_controller.js <-> browser_controller

dart/tools/testing/dart/browser_controller.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 browser;
 
 import "dart:async";
 import "dart:convert" show LineSplitter, UTF8;
 import "dart:core";
 import "dart:io";
 
@@ skipping 655 matching lines @@
   int id;
   static int _idCounter = 0;
 
   BrowserTest(this.url, this.doneCallback, this.timeout) {
     id = _idCounter++;
   }
 }
 
 /* Describes the output of running the test in a browser */
 class BrowserTestOutput {
-  final bool didTimeout;
   final Duration delayUntilTestStarted;
   final Duration duration;
+
+  final String lastKnownMessage;
+
   final BrowserOutput browserOutput;
-  final String dom;
+  final bool didTimeout;
 
   BrowserTestOutput(
-      this.delayUntilTestStarted, this.duration, this.dom,
+      this.delayUntilTestStarted, this.duration, this.lastKnownMessage,
       this.browserOutput, {this.didTimeout: false});
 }
 
 /**
  * Encapsulates all the functionality for running tests in browsers.
  * The interface is rather simple. After starting, the runner tests
  * are simply added to the queue and a the supplied callbacks are called
  * whenever a test completes.
  */
 class BrowserTestRunner {
@@ skipping 630 matching lines @@
     Dart test driver, number of tests: <div id="number"></div><br>
     Currently executing: <div id="currently_executing"></div><br>
     Unhandled error: <div id="unhandled_error"></div>
     <iframe id="embedded_iframe"></iframe>
   </body>
 </html>
 """;
     return driverContent;
   }
 }