[Contextual Search] Add a handle to the bar when Chrome Home is enabled

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 100 matching lines @@
     <dimen name="contextual_search_text_layer_min_height">38dp</dimen>
     <dimen name="contextual_search_term_caption_spacing">1.5dp</dimen>
     <!-- This is the offset of the divider from the end of the bar. -->
     <dimen name="contextual_search_end_button_width">48dp</dimen>
     <dimen name="contextual_search_divider_line_width">1dp</dimen>
     <dimen name="contextual_search_divider_line_height">24dp</dimen>
 
     <!-- Overlay panel dimensions -->
     <dimen name="overlay_panel_bar_height">56dp</dimen>
     <dimen name="overlay_panel_text_size">18sp</dimen>
+    <dimen name="overlay_panel_bar_handle_offset_y">6dp</dimen>
+    <dimen name="overlay_panel_bar_padding_bottom">4dp</dimen>
 
     <!-- Password generation popup dimensions -->
     <dimen name="password_generation_divider_height">1dp</dimen>
     <dimen name="password_generation_text_size">14sp</dimen>
     <dimen name="password_generation_horizontal_margin">10dp</dimen>
     <dimen name="password_generation_text_vertical_margin">12dp</dimen>
 
     <!-- Search engine preference dimensions -->
     <dimen name="search_engine_list_margin_top">6dp</dimen>
 
@@ skipping 311 matching lines @@
     <dimen name="action_bar_shadow_height">10dp</dimen>
     <dimen name="card_corner_radius">2dp</dimen>
     <dimen name="list_item_corner_radius">3dp</dimen>
     <dimen name="list_item_lateral_padding">1dp</dimen>
     <dimen name="history_default_text_margin">16dp</dimen>
 
     <!-- Context Menu Dimensions -->
     <dimen name="context_menu_header_image_min_size">56dp</dimen>
     <dimen name="context_menu_header_image_max_size">56dp</dimen>
 </resources>