Prevent autofilling credit card security number fields with passwords.

components/autofill/content/renderer/password_form_conversion_utils.h

 // 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.
 
 #ifndef COMPONENTS_AUTOFILL_CONTENT_RENDERER_PASSWORD_FORM_CONVERSION_UTILS_H_
 #define COMPONENTS_AUTOFILL_CONTENT_RENDERER_PASSWORD_FORM_CONVERSION_UTILS_H_
 
 #include <map>
 #include <memory>
 #include <vector>
@@ skipping 50 matching lines @@
 
 // Checks in a case-insensitive way if the autocomplete attribute for the given
 // |element| is present and has the specified |value_in_lowercase|.
 bool HasAutocompleteAttributeValue(const blink::WebInputElement& element,
                                    const char* value_in_lowercase);
 
 // Checks in a case-insensitive way if credit card autocomplete attributes for
 // the given |element| are present.
 bool HasCreditCardAutocompleteAttributes(const blink::WebInputElement& element);
 
+// Returns whether the form |field| has a "password" type, but looks like a
+// credit card verification field.
+bool IsCreditCardVerificationPasswordField(const blink::WebInputElement& field);
+
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CONTENT_RENDERER_PASSWORD_FORM_CONVERSION_UTILS_H__