test.dart: Add timeout for browsers that are started but do not fetch tests.

tools/testing/dart/android.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 android;
 
 import "dart:async";
 import "dart:convert" show LineSplitter, UTF8;
 import "dart:core";
 import "dart:io";
@@ skipping 39 matching lines @@
                    getOutput(process.stderr),
                    process.exitCode];
     return Future.wait(futures).then((results) {
       bool success = results[2] == 0;
       if (!success) {
         var error = "Running: '\$ $executable ${args.join(' ')}' failed:"
                     "stdout: \n ${results[0]}"
                     "stderr: \n ${results[1]}"
                     "exitCode: \n ${results[2]}";
         throw new Exception(error);
+      } else {
+        DebugLogger.info("Success: $executable finished");
       }
       return results[0];
     });
   });
 }
 
 /**
  * Helper class to loop through all adb ports.
  *
  * The ports come in pairs:
@@ skipping 222 matching lines @@
     if (_deviceId != null) {
       var extendedAdbArgs = ['-s', _deviceId];
       extendedAdbArgs.addAll(adbArgs);
       adbArgs = extendedAdbArgs;
     }
     return _executeCommandGetOutput("adb", adbArgs);
   }
 }
 
 /**
- * Helper to list all adb devicess available.
+ * Helper to list all adb devices available.
  */
 class AdbHelper {
   static RegExp _deviceLineRegexp =
       new RegExp(r'^([a-zA-Z0-9_-]+)[ \t]+device$', multiLine: true);
 
   static Future<List<String>> listDevices() {
     return Process.run('adb', ['devices']).then((ProcessResult result) {
       if (result.exitCode != 0) {
         throw new Exception("Could not list devices [stdout: ${result.stdout},"
                             "stderr: ${result.stderr}]");
       }
       return _deviceLineRegexp.allMatches(result.stdout)
           .map((Match m) => m.group(1)).toList();
     });
   }
 }
 
 /**
  * Represents an android intent.
  */
 class Intent {
   String action;
   String package;
   String activity;
   String dataUri;
 
   Intent(this.action, this.package, this.activity, [this.dataUri]);
 }