Run dartfmt on all files under runtime.

runtime/observatory/tests/service/evaluate_activation_in_method_class_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
 
 // Tests that expressions evaluated in a frame see the same scope as the
 // frame's method.
 
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 18 matching lines @@
 }
 
 testerDo(Isolate isolate) async {
   await hasStoppedAtBreakpoint(isolate);
 
   // Make sure we are in the right place.
   var stack = await isolate.getStack();
   var topFrame = 0;
   expect(stack.type, equals('Stack'));
   expect(stack['frames'][topFrame].function.name, equals('test'));
-  expect(stack['frames'][topFrame].function.dartOwner.name, equals('Superclass&Klass'));
+  expect(stack['frames'][topFrame].function.dartOwner.name,
+      equals('Superclass&Klass'));
 
   var result;
 
   result = await isolate.evalFrame(topFrame, '_local');
   print(result);
   expect(result.valueAsString, equals('Klass'));
 
   result = await isolate.evalFrame(topFrame, '_instVar');
   print(result);
   expect(result.valueAsString, equals('Klass'));
@@ skipping 23 matching lines @@
   expect(result.valueAsString, equals('Klass'));
 
   // function.Owner verus function.Origin
   // The mixin of Superclass is in _other.dart and the mixin
   // application is in _test.dart.
   result = await isolate.evalFrame(topFrame, 'topLevel');
   print(result);
   expect(result.valueAsString, equals('OtherLibrary'));
 }
 
-main(args) => runIsolateTests(args, [testerDo], testeeConcurrent:testeeDo);
+main(args) => runIsolateTests(args, [testerDo], testeeConcurrent: testeeDo);