chrome: Cleanup class/struct forward declarations

chrome/browser/password_manager/password_store_win.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_WIN_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_WIN_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "components/password_manager/core/browser/password_store_default.h"
 
 class PasswordWebDataService;
 
-namespace autofill {
-struct PasswordForm;
-}
-
 namespace password_manager {
 class LoginDatabase;
 }
 
 // Windows PasswordStore implementation that uses the default implementation,
 // but also uses IE7 passwords if no others found.
 class PasswordStoreWin : public password_manager::PasswordStoreDefault {
  public:
   // The |login_db| must not have been Init()-ed yet. It will be initialized in
   // a deferred manner on the DB thread. The |web_data_service| is only used for
@@ skipping 18 matching lines @@
   // password_manager::PasswordStore:
   void GetLoginsImpl(const password_manager::PasswordStore::FormDigest& form,
                      std::unique_ptr<GetLoginsRequest> request) override;
 
   std::unique_ptr<DBHandler> db_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordStoreWin);
 };
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_WIN_H_