Format all files under tools and utils directory.

tools/testing/dart/utils.dart

 // Copyright (c) 2013, 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 utils;
 
 import 'dart:io';
 import 'dart:convert';
 
 import 'path.dart';
@@ skipping 97 matching lines @@
         currentIndentation += shiftWidth;
         prettifyJsonInternal(obj[key], indentation: false);
         currentIndentation -= shiftWidth;
       }
       currentIndentation -= shiftWidth;
       addString("}", indentation: indentation, newLine: newLine);
     } else {
       addString("$obj", indentation: indentation, newLine: newLine);
     }
   }
+
   prettifyJsonInternal(json);
   return buffer.toString();
 }
 
 /**
  * [areByteArraysEqual] compares a range of bytes from [buffer1] with a
  * range of bytes from [buffer2].
  *
  * Returns [true] if the [count] bytes in [buffer1] (starting at
  * [offset1]) match the [count] bytes in [buffer2] (starting at
@@ skipping 174 matching lines @@
 
 class UniqueObject {
   static int _nextId = 1;
   final int _hashCode;
 
   int get hashCode => _hashCode;
   operator ==(other) => other is UniqueObject && _hashCode == other._hashCode;
 
   UniqueObject() : _hashCode = ++_nextId;
 }