chrome: Cleanup class/struct forward declarations

chrome/browser/ui/views/location_bar/location_bar_view.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_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 11 matching lines @@
 #include "components/prefs/pref_member.h"
 #include "components/search_engines/template_url_service_observer.h"
 #include "components/security_state/core/security_state.h"
 #include "components/zoom/zoom_event_manager_observer.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/animation/slide_animation.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/views/drag_controller.h"
 
-class ActionBoxButtonView;
 class CommandUpdater;
 class ContentSettingBubbleModelDelegate;
 class ContentSettingImageView;
 class ExtensionAction;
 class GURL;
-class InstantController;
 class KeywordHintView;
 class LocationIconView;
 class OpenPDFInReaderView;
 class ManagePasswordsIconViews;
 class PageActionWithBadgeView;
 class PageActionImageView;
 class Profile;
 class SelectedKeywordView;
 class StarView;
 class TemplateURLService;
 class TranslateIconView;
 class ZoomView;
 
 namespace autofill {
 class SaveCardIconView;
 }
 
 namespace views {
 class Label;
-class Widget;
 }
 
 /////////////////////////////////////////////////////////////////////////////
 //
 // LocationBarView class
 //
 //   The LocationBarView class is a View subclass that paints the background
 //   of the URL bar strip and contains its content.
 //
 /////////////////////////////////////////////////////////////////////////////
@@ skipping 399 matching lines @@
   // These allow toggling the verbose security state behavior via flags.
   bool should_show_secure_state_;
   bool should_show_nonsecure_state_;
   bool should_animate_secure_state_;
   bool should_animate_nonsecure_state_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_