upgrade dependencies, including migration to package:test

test/test_util.dart

Index: test/test_util.dart
diff --git a/test/test_util.dart b/test/test_util.dart
index c8fa36a3c8e89b0ec437506d8433cd7be9037f00..0b47e663baec2841ba4ffd04af4adede5ed8e149 100644
--- a/test/test_util.dart
+++ b/test/test_util.dart
@@ -4,14 +4,10 @@
 
 library dev_compiler.test.test_util;
 
-import 'dart:io';
+import 'dart:mirrors';
+import 'package:path/path.dart' as path;
 
-import 'package:unittest/compact_vm_config.dart';
-import 'package:unittest/unittest.dart';
+final String testDirectory =
+    path.dirname((reflectClass(_TestUtils).owner as LibraryMirror).uri.path);
 
-void configureTest() {
-  if (!Platform.environment.containsKey('COVERALLS_TOKEN')) {
-    groupSep = " > ";
-    useCompactVMConfiguration();
-  }
-}
+class _TestUtils {}