MD Settings: Add action indicators in About page buttons.

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 a2b99bbf659b5685e4cc7e2c87e3ab4d99fd3db7..0608e5c7528745d0b437c0b1b8bd884c06589ef6 100644
--- a/chrome/browser/resources/settings/about_page/about_page.html
+++ b/chrome/browser/resources/settings/about_page/about_page.html
@@ -141,18 +141,24 @@
               </span>
             </div>
             <div id="help" class="settings-box" on-tap="onHelpTap_" actionable>
-              $i18n{aboutGetHelpUsingChrome}
+              <div class="start">$i18n{aboutGetHelpUsingChrome}</div>
+              <button class="icon-external" is="paper-icon-button-light">
+              </button>
             </div>
 <if expr="_google_chrome">
             <div id="reportIssue" class="settings-box" actionable
                 on-tap="onReportIssueTap_">
-              $i18n{aboutReportAnIssue}
+              <div class="start">$i18n{aboutReportAnIssue}</div>
+              <button class="subpage-arrow" is="paper-icon-button-light">
+              </button>
             </div>
 </if>
 <if expr="chromeos">
             <div class="settings-box" on-tap="onDetailedBuildInfoTap_"
                 actionable>
-              $i18n{aboutDetailedBuildInfo}
+              <div class="start">$i18n{aboutDetailedBuildInfo}</div>
+              <button class="subpage-arrow" is="paper-icon-button-light">
+              </button>
             </div>
 </if>
             <div class="settings-box product-info copyable">