chrome: Cleanup class/struct forward declarations

chrome/browser/ui/views/location_bar/location_icon_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_ICON_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_ICON_VIEW_H_
 
 #include "base/macros.h"
 #include "chrome/browser/ui/views/location_bar/icon_label_bubble_view.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/animation/slide_animation.h"
 
 class LocationBarView;
 
 namespace ui {
-class KeyEvent;
 class LocatedEvent;
 }
 
 // Use a LocationIconView to display an icon on the leading side of the edit
 // field. It shows the user's current action (while the user is editing), or the
 // page security status (after navigation has completed).
 class LocationIconView : public IconLabelBubbleView,
                          public gfx::AnimationDelegate {
  public:
   LocationIconView(const gfx::FontList& font_list,
@@ skipping 48 matching lines @@
   // True if hovering this view should display a tooltip.
   bool show_tooltip_;
 
   LocationBarView* location_bar_;
   gfx::SlideAnimation animation_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationIconView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_ICON_VIEW_H_