arc: Handle ARC events in MD Settings

chrome/browser/resources/settings/android_apps_page/android_apps_subpage.js

Index: chrome/browser/resources/settings/android_apps_page/android_apps_subpage.js
diff --git a/chrome/browser/resources/settings/android_apps_page/android_apps_subpage.js b/chrome/browser/resources/settings/android_apps_page/android_apps_subpage.js
index 9dae8ffd8403d2b9a06e8160b58746fcc3fe1d1c..bb987f745389b2aaa318f53d9ee2592271589dea 100644
--- a/chrome/browser/resources/settings/android_apps_page/android_apps_subpage.js
+++ b/chrome/browser/resources/settings/android_apps_page/android_apps_subpage.js
@@ -17,7 +17,10 @@ Polymer({
     prefs: Object,
 
     /** @private {!AndroidAppsInfo|undefined} */
-    androidAppsInfo: Object,
+    androidAppsInfo: {
+      type: Object,
+      observer: 'onAndroidAppsInfoUpdate_',
+    },
 
     /** @private */
     dialogBody_: {
@@ -38,6 +41,14 @@ Polymer({
     this.browserProxy_ = settings.AndroidAppsBrowserProxyImpl.getInstance();
   },
 
+  /**
+   * @private
+   */
+  onAndroidAppsInfoUpdate_: function() {
+    if (!this.androidAppsInfo.playStoreEnabled)
+      settings.navigateToPreviousRoute();
+  },
+
   /**
    * @param {Event} event
    * @private