iwyu: Cleanup in the following files:

chrome/browser/autofill/form_field.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_AUTOFILL_FORM_FIELD_H_
 #define CHROME_BROWSER_AUTOFILL_FORM_FIELD_H_
 #pragma once
 
 #include <vector>
 
+#include "base/basictypes.h"
 #include "base/string16.h"
-#include "base/string_util.h"
 #include "chrome/browser/autofill/autofill_type.h"
-#include "chrome/browser/autofill/form_structure.h"
+
+class AutofillField;
+class FormStructure;
 
 extern const char kEcmlShipToTitle[];
 extern const char kEcmlShipToFirstName[];
 extern const char kEcmlShipToMiddleName[];
 extern const char kEcmlShipToLastName[];
 extern const char kEcmlShipToNameSuffix[];
 extern const char kEcmlShipToCompanyName[];
 extern const char kEcmlShipToAddress1[];
 extern const char kEcmlShipToAddress2[];
 extern const char kEcmlShipToAddress3[];
@@ skipping 29 matching lines @@
 extern const char kEcmlCardExpireDay[];
 extern const char kEcmlCardExpireMonth[];
 extern const char kEcmlCardExpireYear[];
 
 enum FormFieldType {
   kAddressType,
   kCreditCardType,
   kOtherFieldType
 };
 
-class AutofillField;
-
 // Represents a logical form field in a web form.  Classes that implement this
 // interface can identify themselves as a particular type of form field, e.g.
 // name, phone number, or address field.
 class FormField {
  public:
   virtual ~FormField() {}
 
   // Associates the available AutofillTypes of a FormField into
   // |field_type_map|.
   virtual bool GetFieldInfo(FieldTypeMap* field_type_map) const = 0;
@@ skipping 86 matching lines @@
 
  private:
   // Checks if any of the labels are named according to the ECML standard.
   // Returns true if at least one ECML named element is found.
   bool CheckECML(FormStructure* fields);
 
   DISALLOW_COPY_AND_ASSIGN(FormFieldSet);
 };
 
 #endif  // CHROME_BROWSER_AUTOFILL_FORM_FIELD_H_