arc: Handle non-launchable apps.

components/arc/common/app.mojom

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
-// Next MinVersion: 13
+// Next MinVersion: 14
 
 module arc.mojom;
 
 import "scale_factor.mojom";
 import "screen_rect.mojom";
 
 // Describes OrientationLock request.
 [Extensible]
 enum OrientationLock {
   NONE = 0,
@@ skipping 68 matching lines @@
   // Notifies that a package has been modified.
   [MinVersion=8] OnPackageModified@10(ArcPackageInfo arcPackageInfo);
 
   // Sends removed ARC package to Chrome. |package_name| must contain non-empty
   // string. This message is sent when ARC receives package removed
   // notification. Removing one package can potentially remove more than one
   // app.
   [MinVersion=1] OnPackageRemoved@3(string package_name);
 
   // Sends information about newly created task.
-  [MinVersion=4] OnTaskCreated@4(int32 task_id, string package_name,
-                                 string activity);
+  [MinVersion=4] OnTaskCreated@4(int32 task_id@0,
+                                 string package_name@1,
+                                 string activity@2,
+                                 [MinVersion=13] string? name@3);
 
   // Notifies that task has been destroyed.
   [MinVersion=4] OnTaskDestroyed@5(int32 task_id);
 
   // Notifies that task has been activated.
   [MinVersion=4] OnTaskSetActive@6(int32 task_id);
 
   // Notifies that notifications enabled settings in Android is changed.
   [MinVersion=7] OnNotificationsEnabledChanged@7(string package_name,
                                                  bool enabled);
@@ skipping 73 matching lines @@
                                            ShowPackageInfoPage page,
                                            ScreenRect dimension_on_screen);
 
   // Sets notification setting for the package.
   [MinVersion=6] SetNotificationsEnabled@10(string package_name, bool enabled);
 
   // Sends a request to ARC to uninstall the given package.  Error (if ever
   // happens) is ignored, and uninstall option should appear in the UI.
   [MinVersion=2] UninstallPackage@5(string package_name);
 };