Underlines for preference spinners and other autofill tweaks

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>
     <color name="light_active_color">#4285F4</color>
+    <color name="input_underline_color">#e5e5e5</color>
 
     <!-- Infobar colors -->
     <color name="infobar_background">#fff</color>
     <color name="infobar_background_separator">#afafaf</color>
     <color name="infobar_accent_blue">#4285f4</color>
     <color name="infobar_accent_blue_pressed">#679df6</color>
     <color name="infobar_tertiary_button_text">#969696</color>
 
     <!-- Tab Switcher Colors -->
     <color name="tab_switcher_background">#111111</color>
@@ skipping 47 matching lines @@
     <color name="pref_button_disabled_color">#83d7fd</color>
     <color name="expandable_group_dark_gray">#484848</color>
 
     <!-- Compositor Tab Title Colors -->
     <color name="compositor_tab_title_bar_text">#555555</color>
     <color name="compositor_tab_title_bar_text_incognito">#FFFFFFFF</color>
     <color name="compositor_tab_title_bar_shadow">#AAFFFFFF</color>
     <color name="compositor_tab_title_bar_shadow_incognito">#88000000</color>
 
 </resources>