upgrade dependencies, including migration to package:test

test/dependency_graph_test.dart

Index: test/dependency_graph_test.dart
diff --git a/test/dependency_graph_test.dart b/test/dependency_graph_test.dart
index 6ccb6a647f464e079ed300fc548b9c4bf882c411..99cc40396a8df62873d8793957f982d8003e9cfa 100644
--- a/test/dependency_graph_test.dart
+++ b/test/dependency_graph_test.dart
@@ -7,7 +7,7 @@ library dev_compiler.test.dependency_graph_test;
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/generated/source.dart';
-import 'package:unittest/unittest.dart';
+import 'package:test/test.dart';
 
 import 'package:dev_compiler/src/analysis_context.dart';
 import 'package:dev_compiler/src/options.dart';
@@ -16,11 +16,7 @@ import 'package:dev_compiler/src/report.dart';
 import 'package:dev_compiler/src/testing.dart';
 import 'package:path/path.dart' as path;
 
-import 'test_util.dart';
-
 void main() {
-  configureTest();
-
   var options = new CompilerOptions(
       runtimeDir: '/dev_compiler_runtime/', useMockSdk: true);
   MemoryResourceProvider testResourceProvider;