chrome: Cleanup class/struct forward declarations

chrome/browser/ui/cocoa/passwords/update_pending_password_view_controller.h

 // Copyright 2015 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_UI_COCOA_PASSWORDS_UPDATE_PENDING_PASSWORD_VIEW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_PASSWORDS_UPDATE_PENDING_PASSWORD_VIEW_CONTROLLER_H_
 
 #import "chrome/browser/ui/cocoa/passwords/pending_password_view_controller.h"
 
-class ManagePasswordsBubbleModel;
 @class CredentialsSelectionView;
 @class PasswordsListViewController;
 
 // Manages the view that offers to save the user's password.
 @interface UpdatePendingPasswordViewController
     : PendingPasswordViewController<NSTextViewDelegate> {
  @private
   base::scoped_nsobject<NSButton> updateButton_;
   base::scoped_nsobject<NSButton> nopeButton_;
   base::scoped_nsobject<PasswordsListViewController> passwordItem_;
   base::scoped_nsobject<CredentialsSelectionView>
       passwordWithUsernameSelectionItem_;
 }
 
 - (NSView*)createPasswordView;
 - (NSArray*)createButtonsAndAddThemToView:(NSView*)view;
 @end
 
 @interface UpdatePendingPasswordViewController (Testing)
 @property(readonly) NSButton* updateButton;
 @property(readonly) NSButton* noButton;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_PASSWORDS_UPDATE_PENDING_PASSWORD_VIEW_CONTROLLER_H_