MD Settings: add a bunch of dialog (X) aria-labels

chrome/browser/resources/settings/android_apps_page/android_apps_page.html

 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="android_apps_browser_proxy.html">
 <link rel="import" href="../controls/settings_toggle_button.html">
 <link rel="import" href="../i18n_setup.html">
 <link rel="import" href="../prefs/prefs_behavior.html">
 <link rel="import" href="../settings_shared_css.html">
 
 <dom-module id="settings-android-apps-page">
@@ skipping 27 matching lines @@
         on-tap="onManageAndroidAppsTap_" actionable
         hidden="[[!androidAppsInfo_.appReady]]">
       <div class="start">
         <div>$i18n{androidAppsManageApps}</div>
       </div>
       <button class="icon-external" is="paper-icon-button-light">
       </button>
     </div>
 
     <!-- Confirm disable android apps dialog -->
-    <dialog is="cr-dialog" id="confirmDisableDialog"
+    <dialog is="cr-dialog" id="confirmDisableDialog" close-text="$i18n{close}"
         on-cancel="onConfirmDisableDialogCancel_">
       <div class="title">$i18n{androidAppsDisableDialogTitle}</div>
       <div class="body" inner-h-t-m-l="[[getDialogBody_()]]"></div>
       <div class="button-container">
         <paper-button class="cancel-button"
             on-tap="onConfirmDisableDialogCancel_">
           $i18n{cancel}
         </paper-button>
         <paper-button class="action-button"
             on-tap="onConfirmDisableDialogConfirm_">
           $i18n{confirm}
         </paper-button>
       </div>
     </dialog>
   </template>
   <script src="android_apps_page.js"></script>
 </dom-module>