Fix static type warnings in test.dart.

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 175 matching lines @@
 
   void compilerExitHandler(int exitCode) {
     if (exitCode != 0) {
       exitHandler(exitCode);
     } else {
       process.close();
       runCommand(testCase.executablePath, testCase.arguments, exitHandler);
     }
   }
       
-  void makeReadHandler(StringInputStream source, List<String> destination) {
+  Function makeReadHandler(StringInputStream source, List<String> destination) {
     return () {
       if (source.closed) return;  // TODO(whesse): Remove when bug is fixed.
       var line = source.readLine();
       while (null != line) {
         destination.add(line);
         line = source.readLine();
       }
     };
   }
 
@@ skipping 35 matching lines @@
 
 
 class DartcBatchRunnerProcess {
   String _executable;
 
   Process _process;
   StringInputStream _stdoutStream;
   StringInputStream _stderrStream;
 
   TestCase _currentTest;
-  StringBuffer _testStdout;
-  StringBuffer _testStderr;
+  List<String> _testStdout;
+  List<String> _testStderr;
   Date _startTime;
   Timer _timer;
 
   DartcBatchRunnerProcess(String this._executable);
 
   bool get active() => _currentTest != null;
 
   void startTest(TestCase testCase) {
     _currentTest = testCase;
     if (_process === null) {
@@ skipping 48 matching lines @@
     // output = '>>> TEST {PASS, FAIL, OK, CRASH, FAIL, TIMEOUT}'
     var outcome = output.split(" ")[2];
     var exitCode = 0;
     if (outcome == "CRASH") exitCode = -10;
     if (outcome == "FAIL" || outcome == "TIMEOUT") exitCode = 1;
     new TestOutput(test, exitCode, outcome == "TIMEOUT", _testStdout,
                    _testStderr, new Date.now().difference(_startTime));
     test.completed();
   }
 
-  void _readOutput(StringInputStream stream, List<String> buffer) {
+  Function _readOutput(StringInputStream stream, List<String> buffer) {
     return () {
       var status;
       var line = stream.readLine();
       // Drain the input stream to get the error output.
       while (line != null) {
         if (line.startsWith('>>> TEST')) {
           status = line;
         } else if (line.startsWith('>>> BATCH START')) {
           // ignore
         } else if (line.startsWith('>>> ')) {
@@ skipping 14 matching lines @@
   }
 
   void _exitHandler(exitCode) {
     if (_timer != null) _timer.cancel();
     _process.close();
     _startProcess(() {
       _reportResult(">>> TEST CRASH");
     });
   }
 
-  void _timeoutHandler(TestCase test) {
+  Function _timeoutHandler(TestCase test) {
     return (ignore) {
       _process.exitHandler = (exitCode) {
         _process.close();
         _startProcess(() {
           _reportResult(">>> TEST TIMEOUT");  
         });
       };
       _process.kill();
     };
   }
@@ skipping 116 matching lines @@
           test.displayName != 'dartc/junit_tests') {
         _ensureDartcBatchRunnersStarted(test.executablePath);
         _getDartcBatchRunnerProcess().startTest(test);
       } else {
         new RunningProcess(test).start();
       }
       _numProcesses++;
     }
   }
 }