Support individual Keychain item deletion

chrome/browser/password_manager/password_store_mac.h

 // Copyright (c) 2009 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_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_MAC_H_
 
 #include "base/scoped_ptr.h"
 #include "chrome/browser/password_manager/password_store.h"
 
@@ skipping 16 matching lines @@
   void GetLoginsImpl(GetLoginsRequest* request,
                      const webkit_glue::PasswordForm& form);
   void GetAllLoginsImpl(GetLoginsRequest* request);
   void GetAllAutofillableLoginsImpl(GetLoginsRequest* request);
 
   // Adds the given form to the Keychain if it's something we want to store
   // there (i.e., not a blacklist entry). Returns true if the operation
   // succeeded (either we added successfully, or we didn't need to).
   bool AddToKeychainIfNecessary(const webkit_glue::PasswordForm& form);
 
+  // Returns true if our database contains a form that exactly matches the given
+  // keychain form.
+  bool DatabaseHasFormMatchingKeychainForm(
+    const webkit_glue::PasswordForm& form);
+
   scoped_ptr<MacKeychain> keychain_;
   scoped_ptr<LoginDatabaseMac> login_metadata_db_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordStoreMac);
 };
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_MAC_H_