Implement Mac Keychain migration algorithm.

chrome/browser/password_manager/password_store_mac_internal.h

 // Copyright (c) 2012 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_PASSWORD_MANAGER_PASSWORD_STORE_MAC_INTERNAL_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_MAC_INTERNAL_H_
 
 #include <Security/Security.h>
 
 #include <string>
@@ skipping 121 matching lines @@
 //
 // If excessive prompting for access to other applications' keychain items
 // becomes an issue, the password storage API will need to intially call this
 // function with |extract_password_data| set to false, and retrieve the password
 // later (accessing other fields doesn't require authorization).
 bool FillPasswordFormFromKeychainItem(const AppleKeychain& keychain,
                                       const SecKeychainItemRef& keychain_item,
                                       autofill::PasswordForm* form,
                                       bool extract_password_data);
 
+// Returns true if |keychain_item| has the application-specific creator code in
+// its attributes.
+bool HasCreatorCode(const AppleKeychain& keychain,
+                    const SecKeychainItemRef& keychain_item);
+
 // Use FormMatchStrictness to configure which forms are considered a match by
 // FormsMatchForMerge:
 enum FormMatchStrictness {
   STRICT_FORM_MATCH,  // Match only forms with the same scheme, signon realm and
                       // username value.
   FUZZY_FORM_MATCH,   // Also match cases where the first form's
                       // original_signon_realm is nonempty and matches the
                       // second form's signon_realm.
 };
 
@@ skipping 55 matching lines @@
 // Returns PasswordForm instances populated with password data for each keychain
 // entry in |item_form_pairs| that could be merged with |query_form|.
 ScopedVector<autofill::PasswordForm> ExtractPasswordsMergeableWithForm(
     const AppleKeychain& keychain,
     const std::vector<ItemFormPair>& item_form_pairs,
     const autofill::PasswordForm& query_form);
 
 }  // namespace internal_keychain_helpers
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_MAC_INTERNAL_H_