Run dartfmt on all files under runtime.

runtime/observatory/tests/observatory_ui/mocks/repositories/eval.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.
 
 part of mocks;
 
-typedef Future<M.Object> EvalRepositoryMockCallback(M.IsolateRef isolate,
-                                                    M.ObjectRef context,
-                                                    String expression);
+typedef Future<M.Object> EvalRepositoryMockCallback(
+    M.IsolateRef isolate, M.ObjectRef context, String expression);
 
 class EvalRepositoryMock implements M.EvalRepository {
   final EvalRepositoryMockCallback _get;
 
-  EvalRepositoryMock({EvalRepositoryMockCallback getter})
-    : _get = getter;
+  EvalRepositoryMock({EvalRepositoryMockCallback getter}) : _get = getter;
 
-  Future<M.Object> evaluate(M.IsolateRef isolate, M.ObjectRef context,
-                            String expression){
+  Future<M.Object> evaluate(
+      M.IsolateRef isolate, M.ObjectRef context, String expression) {
     if (_get != null) {
       return _get(isolate, context, expression);
     }
     return new Future.value(null);
   }
 }