Reformat code to minimize churn

pkg/analysis_server/lib/src/services/completion/common_usage_computer.dart

 // Copyright (c) 2015, 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 services.completion.computer.dart.relevance;
 
 import 'package:analysis_server/src/protocol_server.dart' as protocol;
 import 'package:analysis_server/src/protocol_server.dart'
     show CompletionSuggestion, CompletionSuggestionKind;
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
@@ skipping 81 matching lines @@
         }
       }
     }
   }
 }
 
 /**
  * An [AstVisitor] used to determine the best defining type of a node.
  */
 class _BestTypeVisitor extends GeneralizingAstVisitor {
-
   /**
    * The entity which the completed text will replace (or which will be
    * displaced once the completed text is inserted).  This may be an AstNode or
    * a Token, or it may be null if the cursor is after all tokens in the file.
    * See field of the same name in [CompletionTarget].
    */
   final Object entity;
 
   _BestTypeVisitor(this.entity);
 
@@ skipping 24 matching lines @@
   DartType visitPropertyAccess(PropertyAccess node) {
     if (node.propertyName == entity) {
       Expression target = node.realTarget;
       if (target != null) {
         return target.bestType;
       }
     }
     return null;
   }
 }