chrome: Cleanup class/struct forward declarations

chrome/browser/ui/cocoa/passwords/password_item_views.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_PASSWORD_ITEM_VIEWS_H_
 #define CHROME_BROWSER_UI_COCOA_PASSWORDS_PASSWORD_ITEM_VIEWS_H_
 
 #import <Cocoa/Cocoa.h>
 
 namespace autofill {
 struct PasswordForm;
 }  // namespace autofill
 
 @class HoverImageButton;
-class ManagePasswordsBubbleModel;
 @protocol PasswordItemDelegate;
 
 // The state of the password item.
 enum ManagePasswordItemState {
   MANAGE_PASSWORD_ITEM_STATE_PENDING,
   MANAGE_PASSWORD_ITEM_STATE_MANAGE,
   MANAGE_PASSWORD_ITEM_STATE_DELETED
 };
 
 // Protocol for items that have two dynamic columns.
@@ skipping 67 matching lines @@
 - (id)initWithDelegate:(id<PasswordItemDelegate>)delegate
           passwordForm:(const autofill::PasswordForm*)passwordForm;
 @end
 
 @interface ManagePasswordItemViewController (Testing)
 @property(readonly) ManagePasswordItemState state;
 @property(readonly) NSView* contentView;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_PASSWORDS_PASSWORD_ITEM_VIEWS_H_