[ios] Fixed getUnownedAutofillableFormFieldElements_.

components/autofill/ios/browser/resources/autofill_controller.js

 // Copyright 2013 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.
 
 // Installs Autofill management functions on the |__gCrWeb| object.
 //
 // It scans the DOM, extracting and storing forms and returns a JSON string
 // representing an array of objects, each of which represents an Autofill form
 // with information about a form to be filled and/or submitted and it can be
 // translated to struct FormData
@@ skipping 247 matching lines @@
   var unownedFieldsetChildren = [];
   for (var i = 0; i < elements.length; ++i) {
     if (__gCrWeb.common.isFormControlElement(elements[i])) {
       if (!elements[i].form) {
         unownedFieldsetChildren.push(elements[i]);
       }
     }
 
     if (__gCrWeb.autofill.hasTagName(elements[i], 'fieldset') &&
         !isElementInsideFormOrFieldSet(elements[i])) {
-      fieldset.push(elements[i]);
+      fieldsets.push(elements[i]);
     }
   }
   return __gCrWeb.autofill.extractAutofillableElementsFromSet(
       unownedFieldsetChildren);
 }
 
 /**
  * Extracts fields from |controlElements| with |extractMask| to |formFields|.
  * The extracted fields are also placed in |elementArray|.
  *
@@ skipping 1781 matching lines @@
       var elementName = __gCrWeb['common'].nameForAutofill(element);
       var value = formData[elementName];
       if (value) {
         element.placeholder = value;
       }
     }
   }
 };
 
 }());  // End of anonymous object