Allow ShortcutHelper to retrieve badge icon dimensions.

chrome/android/java/res/values/dimens.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2014 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. -->
 
 <resources>
     <!-- Connection info popup dimensions -->
     <dimen name="connection_info_padding_wide">24dp</dimen>
     <dimen name="connection_info_padding_thin">16dp</dimen>
 
@@ skipping 205 matching lines @@
 
     <dimen name="webapp_splash_offset">32dp</dimen>
     <dimen name="webapp_splash_image_size_ideal">128dp</dimen>
     <dimen name="webapp_splash_image_size_threshold">80dp</dimen>
     <dimen name="webapp_splash_image_size_minimum">48dp</dimen>
 
     <dimen name="webapp_splash_small_image_size">80dp</dimen>
     <dimen name="webapp_splash_small_title_margin_top">32dp</dimen>
     <dimen name="webapp_splash_large_title_margin_bottom">16dp</dimen>
 
+    <dimen name="webapk_badge_icon_size">24dp</dimen>
+    
     <!-- Toolbar dimensions -->
     <dimen name="toolbar_tab_count_text_size_1_digit">12dp</dimen>
     <dimen name="toolbar_tab_count_text_size_2_digit">10dp</dimen>
     <dimen name="toolbar_height_no_shadow">56dp</dimen>
     <dimen name="toolbar_shadow_height">8dp</dimen>
     <dimen name="toolbar_progress_bar_height">2dp</dimen>
     <dimen name="toolbar_button_width">48dp</dimen>
 
     <dimen name="toolbar_edge_padding">8dp</dimen>
     <dimen name="location_bar_vertical_margin">8dp</dimen>
@@ skipping 159 matching lines @@
     <dimen name="selectable_list_layout_row_end_padding">16dp</dimen>
     <dimen name="selectable_list_layout_start_icon_width">56dp</dimen>
     <dimen name="toolbar_wide_display_nav_icon_offset">-18dp</dimen>
     <dimen name="toolbar_wide_display_end_offset">-14dp</dimen>
 
     <!--  Miscellaneous dimensions -->
     <dimen name="action_bar_shadow_height">10dp</dimen>
     <dimen name="card_corner_radius">2dp</dimen>
     <dimen name="history_default_text_margin">16dp</dimen>
 </resources>