WIP: run clang-format-js on lots of things

chrome/browser/resources/print_preview/data/margins.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Creates a Margins object that holds four margin values in points.
    * @param {number} top The top margin in pts.
@@ skipping 89 matching lines @@
     clone_: function() {
       var clone = {};
       for (var o in this.value_) {
         clone[o] = this.value_[o];
       }
       return clone;
     }
   };
 
   // Export
-  return {
-    Margins: Margins
-  };
+  return {Margins: Margins};
 });