pkg/smoke: support latest analyzer version and formatted code

test/codegen/common.dart

 // Copyright (c) 2014, 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 smoke.test.codegen.common;
 
 import 'package:smoke/codegen/generator.dart';
 import 'package:unittest/unittest.dart';
 
-checkResults(SmokeCodeGenerator generator, {List<String> imports: const [],
-    String topLevel: '', String initCall}) {
-  var allImports = []..addAll(DEFAULT_IMPORTS)..addAll(imports)..add('');
+checkResults(SmokeCodeGenerator generator,
+    {List<String> imports: const [], String topLevel: '', String initCall}) {
+  var allImports = []
+    ..addAll(DEFAULT_IMPORTS)
+    ..addAll(imports)
+    ..add('');
   var genImports = new StringBuffer();
   generator.writeImports(genImports);
   expect(genImports.toString(), allImports.join('\n'));
 
   var genTopLevel = new StringBuffer();
   generator.writeTopLevelDeclarations(genTopLevel);
   expect(genTopLevel.toString(), topLevel);
 
   var indentedCode = initCall.replaceAll("\n", "\n  ").trim();
   var genInitCall = new StringBuffer();
   genInitCall.write('  useGeneratedCode(');
   generator.writeStaticConfiguration(genInitCall);
   genInitCall.writeln(');');
   expect(genInitCall.toString(), '  $indentedCode\n');
 }