arc: Handle ARC events in MD Settings

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

Index: chrome/browser/resources/settings/android_apps_page/android_apps_page.js
diff --git a/chrome/browser/resources/settings/android_apps_page/android_apps_page.js b/chrome/browser/resources/settings/android_apps_page/android_apps_page.js
index 861731780652ab51607d5907c609012ddb6e61da..f38b049b0531cfa2872e007fc9011ad3bda30d65 100644
--- a/chrome/browser/resources/settings/android_apps_page/android_apps_page.js
+++ b/chrome/browser/resources/settings/android_apps_page/android_apps_page.js
@@ -45,16 +45,31 @@ Polymer({
 
   /** @override */
   ready: function() {
-    cr.addWebUIListener(
+    this.listener_ = cr.addWebUIListener(
         'android-apps-info-update', this.androidAppsInfoUpdate_.bind(this));
     this.browserProxy_.requestAndroidAppsInfo();
   },
+
   /**
    * @param {AndroidAppsInfo} info
    * @private
    */
   androidAppsInfoUpdate_: function(info) {
     this.androidAppsInfo_ = info;
+    if (!this.androidAppsInfo_.playStoreEnabled &&
+        settings.getCurrentRoute() == settings.Route.ANDROID_APPS_DETAILS) {
+      settings.navigateToPreviousRoute();
+    }
+  },
+
+  /**
+   * Discards current element from handling android-apps-info-update events.
+   */
+  discardForTest: function() {
+    if (this.listener_) {
+      cr.removeWebUIListener(this.listener_);
+      this.listener_ = null;
+    }
   },
 
   /**
@@ -68,7 +83,7 @@ Polymer({
 
   /** @private */
   onSubpageTap_: function() {
-    if (this.androidAppsInfo_.appReady)
+    if (this.androidAppsInfo_.playStoreEnabled)
       settings.navigateTo(settings.Route.ANDROID_APPS_DETAILS);
   },
 });