[Autofill] Modified to remove const qualifiers from FormField and AutofillScanner implementation.

components/autofill/core/browser/credit_card_field.cc

 // 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.
 
 #include "components/autofill/core/browser/credit_card_field.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 40 matching lines @@
       }
 
       if (ParseField(scanner, name_pattern, &credit_card_field->cardholder_))
         continue;
 
       // As a hard-coded hack for Expedia's billing pages (expedia_checkout.html
       // and ExpediaBilling.html in our test suite), recognize separate fields
       // for the cardholder's first and last name if they have the labels "cfnm"
       // and "clnm".
       scanner->SaveCursor();
-      const AutofillField* first;
+      AutofillField* first;
       if (ParseField(scanner, base::ASCIIToUTF16("^cfnm"), &first) &&
           ParseField(scanner, base::ASCIIToUTF16("^clnm"),
                      &credit_card_field->cardholder_last_)) {
         credit_card_field->cardholder_ = first;
         continue;
       }
       scanner->Rewind();
     }
 
     // Check for a credit card type (Visa, MasterCard, etc.) field.
@@ skipping 149 matching lines @@
       ok = ok && AddClassification(expiration_year_,
                                    CREDIT_CARD_EXP_4_DIGIT_YEAR,
                                    map);
     }
   }
 
   return ok;
 }
 
 }  // namespace autofill