chrome: Cleanup class/struct forward declarations

chrome/browser/ui/views/passwords/manage_passwords_icon_views.h

 // Copyright 2013 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_VIEWS_PASSWORDS_MANAGE_PASSWORDS_ICON_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_PASSWORDS_MANAGE_PASSWORDS_ICON_VIEWS_H_
 
 #include "base/macros.h"
 #include "chrome/browser/ui/passwords/manage_passwords_bubble_model.h"
 #include "chrome/browser/ui/passwords/manage_passwords_icon_view.h"
 #include "chrome/browser/ui/views/location_bar/bubble_icon_view.h"
 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
 #include "ui/views/controls/image_view.h"
 
 class CommandUpdater;
-class ManagePasswordsUIController;
 
 // View for the password icon in the Omnibox.
 class ManagePasswordsIconViews : public ManagePasswordsIconView,
                                  public BubbleIconView {
  public:
   explicit ManagePasswordsIconViews(CommandUpdater* updater);
   ~ManagePasswordsIconViews() override;
 
   // ManagePasswordsIconView:
   void SetState(password_manager::ui::State state) override;
@@ skipping 13 matching lines @@
 
   // Updates the UI to match |state_|.
   void UpdateUiForState();
 
   password_manager::ui::State state_;
 
   DISALLOW_COPY_AND_ASSIGN(ManagePasswordsIconViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PASSWORDS_MANAGE_PASSWORDS_ICON_VIEWS_H_