Add mac-only "Set Up Automatic Updates..." button to the new about page.

chrome/browser/resources/settings/about_page/about_page.html

Index: chrome/browser/resources/settings/about_page/about_page.html
diff --git a/chrome/browser/resources/settings/about_page/about_page.html b/chrome/browser/resources/settings/about_page/about_page.html
index d657f1c5e24bf8afee65c5941a0fd15b434c48a1..1c124b8c179e5f91a7a636396ba7832e31c913db 100644
--- a/chrome/browser/resources/settings/about_page/about_page.html
+++ b/chrome/browser/resources/settings/about_page/about_page.html
@@ -22,6 +22,10 @@
 <link rel="import" href="/settings_page/settings_subpage.html">
 </if>
 
+<if expr="_google_chrome and is_macosx">
+<link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
+</if>
+
 <dom-module id="settings-about-page">
   <template>
     <style include="settings-shared settings-page-styles">
@@ -69,6 +73,12 @@
       #regulatoryInfo img {
         width: 330px;
       }
+
+<if expr="_google_chrome and is_macosx">
+      #promoteUpdater[disabled] {
+        @apply(--settings-secondary);
+      }
+</if>
     </style>
     <div>
       <settings-section page-title="$i18n{aboutPageTitle}" section="about">
@@ -128,6 +138,27 @@
 </if>
               </span>
             </div>
+<if expr="_google_chrome and is_macosx">
+            <template is="dom-if" if="[[!promoteUpdaterStatus_.hidden]]">
+              <div id="promoteUpdater" class="settings-box"
+                  disabled$="[[promoteUpdaterStatus_.disabled]]"
+                  actionable$="[[promoteUpdaterStatus_.actionable]]"
+                  on-tap="onPromoteUpdaterTap_">
+                <div class="start">
+                  [[promoteUpdaterStatus_.text]]
+                  <a href="https://support.google.com/chrome/answer/95414"
+                      target="_blank" id="updaterLearnMore"
+                      on-tap="onLearnMoreTap_">
+                    $i18n{learnMore}
+                  </a>
+                </div>
+                <button class="subpage-arrow" is="paper-icon-button-light"
+                    disabled="[[promoteUpdaterStatus_.disabled]]"
+                    hidden="[[!promoteUpdaterStatus_.actionable]]">
+                </button>
+              </div>
+            </template>
+</if>
             <div id="help" class="settings-box" on-tap="onHelpTap_" actionable>
               <div class="start">$i18n{aboutGetHelpUsingChrome}</div>
               <button class="icon-external" is="paper-icon-button-light">