Enlarge size of touch target for several location bar buttons without affecting visual layout.

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_
 #pragma once
 
 #include "chrome/browser/ui/views/location_bar/page_info_helper.h"
+#include "chrome/browser/ui/views/location_bar/touchable_location_bar_view.h"
 #include "ui/views/controls/image_view.h"
 
 class LocationBarView;
 namespace views {
 class MouseEvent;
 }
 
 // LocationIconView is used to display an icon to the left of the edit field.
 // This shows the user's current action while editing, the page security
 // status on https pages, or a globe for other URLs.
-class LocationIconView : public views::ImageView {
+class LocationIconView
+    : public views::ImageView,
+      public TouchableLocationBarView {
  public:
   explicit LocationIconView(LocationBarView* location_bar);
   virtual ~LocationIconView();
 
   // Overridden from views::ImageView:
   virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE;
   virtual ui::GestureStatus OnGestureEvent(
       const views::GestureEvent& event) OVERRIDE;
 
+  // TouchableLocationBarView.
+  virtual int GetBuiltInHorizontalPadding() const OVERRIDE;
+
   // Whether we should show the tooltip for this icon or not.
   void ShowTooltip(bool show);
 
  private:
   PageInfoHelper page_info_helper_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(LocationIconView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_ICON_VIEW_H_