Undo some of the initializing formal change 1755

tools/testing/dart/test_runner.dart

 // Copyright (c) 2011, 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("test_runner");
 
 #import("status_file_parser.dart");
 #import("test_progress.dart");
 #import("test_suite.dart");
 
@@ skipping 18 matching lines @@
   bool isNegative;
   Set<String> expectedOutcomes;
   Function completedHandler;
 
   TestCase(this.displayName,
            this.executablePath,
            this.arguments,
            this.timeout,
            this.completedHandler,
            this.expectedOutcomes,
-           [isNegative = false])
-      : this.isNegative = isNegative {
+           [this.isNegative = false]) {
     if (!isNegative) {
       this.isNegative = displayName.contains("NegativeTest");
     }
     commandLine = executablePath;
     for (var arg in arguments) {
       commandLine += " " + arg;
     }
   }
 
   void completed() { completedHandler(this); }
@@ skipping 52 matching lines @@
   Process process;
   TestCase testCase;
   int timeout;
   bool timedOut = false;
   Date startTime;
   Timer timeoutTimer;
   List<String> stdout;
   List<String> stderr;
   List<Function> handlers;
 
-  RunningProcess(this.testCase, [timeout = NO_TIMEOUT])
-      : this.timeout = timeout;
+  RunningProcess(this.testCase, [this.timeout = NO_TIMEOUT]);
 
   void exitHandler(int exitCode) {
     new TestOutput(testCase, exitCode, timedOut, stdout,
                    stderr, new Date.now().difference(startTime));
     process.close();
     timeoutTimer.cancel();
     testCase.completed();
   }
 
   void makeReadHandler(StringInputStream source, List<String> destination) {
@@ skipping 82 matching lines @@
         _progress.done(test_arg);
         _tryRunTest();
         oldCallback(test_arg);
       };
       test.completedHandler = wrapper;
       new RunningProcess(test, test.timeout).start();
       _numProcesses++;
     }
   }
 }