Run dartfmt on remaining unformated pkg packages

pkg/testing/lib/src/discover.dart

 // Copyright (c) 2016, 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.md file.
 
 library testing.discover;
 
-import 'dart:io' show
-    Directory,
-    FileSystemEntity,
-    Platform,
-    Process;
+import 'dart:io' show Directory, FileSystemEntity, Platform, Process;
 
-import 'dart:async' show
-    Future,
-    Stream,
-    StreamController,
-    StreamSubscription;
+import 'dart:async' show Future, Stream, StreamController, StreamSubscription;
 
-import '../testing.dart' show
-  TestDescription;
+import '../testing.dart' show TestDescription;
 
 final Uri packageConfig = computePackageConfig();
 
 final Uri dartSdk = computeDartSdk();
 
 /// Common arguments when running a dart program. Returns a copy that can
 /// safely be modified by caller.
 List<String> get dartArguments => <String>["-c", "--packages=$packageConfig"];
 
 Stream<TestDescription> listTests(List<Uri> testRoots, {Pattern pattern}) {
@@ skipping 34 matching lines @@
   return controller.stream;
 }
 
 Uri computePackageConfig() {
   String path = Platform.packageConfig;
   if (path != null) return Uri.base.resolve(path);
   return Uri.base.resolve(".packages");
 }
 
 Uri computeDartSdk() {
-  String dartSdkPath = Platform.environment["DART_SDK"]
-      ?? const String.fromEnvironment("DART_SDK");
+  String dartSdkPath = Platform.environment["DART_SDK"] ??
+      const String.fromEnvironment("DART_SDK");
   if (dartSdkPath != null) {
     return Uri.base.resolveUri(new Uri.file(dartSdkPath));
   } else {
     return Uri.base.resolve(Platform.resolvedExecutable).resolve("../");
   }
 }
 
-Future<Process> startDart(
-    Uri program,
-    [List<String> arguments,
-     List<String> vmArguments]) {
+Future<Process> startDart(Uri program,
+    [List<String> arguments, List<String> vmArguments]) {
   List<String> allArguments = <String>[];
   allArguments.addAll(vmArguments ?? dartArguments);
   allArguments.add(program.toFilePath());
   if (arguments != null) {
     allArguments.addAll(arguments);
   }
   return Process.start(Platform.resolvedExecutable, allArguments);
 }