Replace the existing unittest APIs with the new runner infrastructure.

lib/vm_config.dart

Index: lib/vm_config.dart
diff --git a/lib/vm_config.dart b/lib/vm_config.dart
index 77e91e35c43c8c277d5dee24f1b729aad187c0d6..44d5158d2689da2d2df8c7b43d4053964d8fcb42 100644
--- a/lib/vm_config.dart
+++ b/lib/vm_config.dart
@@ -2,64 +2,25 @@
 // 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.
 
-/// A simple unit test library for running tests on the VM.
+@deprecated
 library unittest.vm_config;
 
-import 'dart:async';
-import 'dart:io';
-import 'unittest.dart';
+import 'src/simple_configuration.dart';
 
+/// This is a stub class used to preserve compatibility with unittest 0.11.*.
+///
+/// It will be removed before the next version is released.
+@deprecated
 class VMConfiguration extends SimpleConfiguration {
-  // Color constants used for generating messages.
   final String GREEN_COLOR = '\u001b[32m';
   final String RED_COLOR = '\u001b[31m';
   final String MAGENTA_COLOR = '\u001b[35m';
   final String NO_COLOR = '\u001b[0m';
 
-  // We make this public so the user can turn it off if they want.
-  bool useColor;
+  bool useColor = false;
 
-  VMConfiguration()
-      : super(),
-        useColor = stdioType(stdout) == StdioType.TERMINAL;
-
-  String formatResult(TestCase testCase) {
-    String result = super.formatResult(testCase);
-    if (useColor) {
-      if (testCase.result == PASS) {
-        return "${GREEN_COLOR}${result}${NO_COLOR}";
-      } else if (testCase.result == FAIL) {
-        return "${RED_COLOR}${result}${NO_COLOR}";
-      } else if (testCase.result == ERROR) {
-        return "${MAGENTA_COLOR}${result}${NO_COLOR}";
-      }
-    }
-    return result;
-  }
-
-  void onInit() {
-    super.onInit();
-    filterStacks = formatStacks = true;
-  }
-
-  void onDone(bool success) {
-    int status;
-    try {
-      super.onDone(success);
-      status = 0;
-    } catch (ex) {
-      // A non-zero exit code is used by the test infrastructure to detect
-      // failure.
-      status = 1;
-    }
-    Future.wait([stdout.close(), stderr.close()]).then((_) {
-      exit(status);
-    });
-  }
-}
-
-void useVMConfiguration() {
-  unittestConfiguration = _singleton;
+  VMConfiguration() : super();
 }
 
-final _singleton = new VMConfiguration();
+@deprecated
+void useVMConfiguration() {}