[Payments] Add validation for unsupported credit card types in editor.

components/autofill/core/browser/validation.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_CORE_BROWSER_VALIDATION_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_VALIDATION_H_
 
 #include "base/strings/string16.h"
 #include "base/strings/string_piece.h"
 #include "components/autofill/core/browser/field_types.h"
@@ skipping 12 matching lines @@
 
 // Returns true if |text| looks like a valid credit card number.
 // Uses the Luhn formula to validate the number.
 bool IsValidCreditCardNumber(const base::string16& text);
 
 // Returns true if |code| looks like a valid credit card security code
 // for the given credit card type.
 bool IsValidCreditCardSecurityCode(const base::string16& code,
                                    const base::StringPiece card_type);
 
+// Returns true if |text| is a supported card type and a valid credit card
+// number. |error_message| can't be null and will be filled with the appropriate
+// error message.
+bool IsValidCreditCardNumberForBasicCardNetworks(
+    const base::string16& text,
+    const std::set<std::string>& supported_basic_card_networks,
+    base::string16* error_message);
+
 // Returns true if |text| looks like a valid e-mail address.
 bool IsValidEmailAddress(const base::string16& text);
 
-// Returns true if |text| is a valid US state name or abbreviation.  It is
-// case insensitive.  Valid for US states only.
+// Returns true if |text| is a valid US state name or abbreviation.  It is case
+// insensitive.  Valid for US states only.
 bool IsValidState(const base::string16& text);
 
 // Returns true if |text| looks like a valid zip code.
 // Valid for US zip codes only.
 bool IsValidZip(const base::string16& text);
 
 // Returns true if |text| looks like an SSN, with or without separators.
 bool IsSSN(const base::string16& text);
 
 // Returns whether |value| is valid for the given |type|. If not null,
 // |error_message| is populated when the function returns false.
 bool IsValidForType(const base::string16& value,
                     ServerFieldType type,
                     base::string16* error_message);
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_VALIDATION_H_