Fix dev compiler formatter error.

pkg/dev_compiler/tool/input_sdk/private/js_array.dart

 // Copyright (c) 2012, 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 dart._interceptors;
 
 /**
  * The interceptor class for [List]. The compiler recognizes this
  * class as an interceptor, and changes references to [:this:] to
  * actually use the receiver of the method, which is generated as an extra
@@ skipping 225 matching lines @@
       // TODO(22407): Improve bounds check elimination to allow this JS code to
       // be replaced by indexing.
       var/*=E*/ element = JS('', '#[#]', this, i);
       value = combine(value, element);
       if (length != this.length) throw new ConcurrentModificationError(this);
     }
     return value;
   }
 
   /*=T*/ fold/*<T>*/(
-      /*=T*/ initialValue, /*=T*/ combine(/*=T*/ previousValue, E element)) {
+      /*=T*/ initialValue,
+      /*=T*/ combine(/*=T*/ previousValue, E element)) {
     var/*=T*/ value = initialValue;
     int length = this.length;
     for (int i = 0; i < length; i++) {
       // TODO(22407): Improve bounds check elimination to allow this JS code to
       // be replaced by indexing.
       var/*=E*/ element = JS('', '#[#]', this, i);
       value = combine(value, element);
       if (this.length != length) throw new ConcurrentModificationError(this);
     }
     return value;
@@ skipping 363 matching lines @@
 
     if (_index >= length) {
       _current = null;
       return false;
     }
     _current = _iterable[_index];
     _index++;
     return true;
   }
 }