Fix analyzer formatter errors.

pkg/analyzer/test/generated/strong_mode_test.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 file.
 
 library analyzer.test.generated.strong_mode_test;
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
@@ skipping 1193 matching lines @@
   Type parameter 'T' declared to extend 'num'.
 The type 'String' was inferred from:
   Return type declared as '(T) → T'
               used where  '(String) → String' is required.
 
 Consider passing explicit type argument(s) to the generic.
 
 ''');
   }
 
-
   test_inference_error_genericFunction() async {
     Source source = addSource(r'''
 T max<T extends num>(T x, T y) => x < y ? y : x;
 abstract class Iterable<T> {
   T get first;
   S fold<S>(S s, S f(S s, T t));
 }
 test(Iterable values) {
   num n = values.fold(values.first as num, max);
 }
@@ skipping 2699 matching lines @@
   var v = x;
   v; // marker
 }
 int x = 3;
 ''';
     CompilationUnit unit = await resolveSource(code);
     assertPropagatedAssignedType(code, unit, typeProvider.intType, null);
     assertTypeOfMarkedExpression(code, unit, typeProvider.intType, null);
   }
 }