Run dartfmt on all files under runtime.

runtime/observatory/tests/service/local_variable_declaration_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.
 // VMOptions=--error_on_bad_type --error_on_bad_override  --verbose_debug
 
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'service_test_common.dart';
 import 'test_helper.dart';
 import 'dart:developer';
 
 testParameters(int jjjj, int oooo, [int hhhh, int nnnn]) {
   debugger();
 }
 
 testMain() {
   int xxx, yyyy, zzzzz;
   for (int i = 0; i < 1; i++) {
-    var foo = () {
-    };
+    var foo = () {};
     debugger();
   }
   var bar = () {
     print(xxx);
     print(yyyy);
     debugger();
   };
   bar();
   testParameters(0, 0);
 }
@@ skipping 17 matching lines @@
       final int declarationTokenPos = variable['declarationTokenPos'];
       final String name = variable['name'];
       final String token = script.getToken(declarationTokenPos);
       expect(name, token);
     }
   },
   resumeIsolate,
   hasStoppedAtBreakpoint,
   // We have stopped in the anonymous closure assigned to bar. Verify that
   // variables captured in the context have valid declaration positions.
-  (Isolate isolate) async  {
+  (Isolate isolate) async {
     var stack = await isolate.getStack();
     expect(stack.type, equals('Stack'));
     expect(stack['frames'].length, greaterThanOrEqualTo(1));
     // Grab the top frame.
     Frame frame = stack['frames'][0];
     // Grab the script.
     Script script = frame.location.script;
     await script.load();
     print(frame);
     expect(frame.variables.length, greaterThanOrEqualTo(1));
@@ skipping 23 matching lines @@
     for (var variable in frame.variables) {
       final int declarationTokenPos = variable['declarationTokenPos'];
       final String name = variable['name'];
       final String token = script.getToken(declarationTokenPos);
       expect(name, token);
     }
   }
 ];
 
 main(args) => runIsolateTests(args, tests, testeeConcurrent: testMain);