🔍 Add first run dialog for selecting search engine

chrome/android/java/res/values/colors.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>
     <!-- Common colors -->
     <color name="default_text_color">#333</color>
     <color name="default_primary_color">#f2f2f2</color>
     <color name="light_normal_color">#5A5A5A</color>
@@ skipping 88 matching lines @@
     <color name="compositor_tab_title_bar_text_incognito">#FFFFFFFF</color>
 
     <!-- First Run Experience Colors -->
     <color name="fre_text_color">#000000</color>
     <color name="fre_title_color">#161616</color>
 
     <!-- Account Signin Colors -->
     <!-- As in dimens.xml, signin uses values from the First Run Experience -->
     <color name="signin_head_background">#fff</color>
     <color name="signin_body_background">#fafafa</color>
-    <color name="signin_border_line_color">#000</color>
 
     <!-- Sad Tab colors -->
     <color name="sad_tab_header_text_color">#333333</color>
     <color name="sad_tab_body_text_color">#646464</color>
 
     <!-- NTP Colors. Used on the bookmarks and recent tabs pages. -->
     <color name="ntp_bg">#f2f2f2</color>
     <color name="ntp_bg_incognito">#222</color>
     <color name="ntp_search_box_hint">#969696</color>
     <color name="ntp_list_item_text">#333</color>
@@ skipping 91 matching lines @@
 
     <!-- Translate Infobar colors -->
     <color name="translate_overflow_menu_divider_color">#e0e0e0</color>
 
     <!-- Other colors -->
     <color name="selectable_list_item_highlight_color">#804281f4</color>
     <color name="media_viewer_bg">#000000</color>
     <color name="image_viewer_bg">#0e0e0e</color>
 
 </resources>