Discard pinning an app with non-empty launcher id.

chrome/browser/ui/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 1262 matching lines @@
     ]
     if (enable_rlz) {
       deps += [ "//chrome/browser:rlz" ]
     }
   }
   if (use_cups) {
     configs += [ "//printing:cups" ]
   }
   if (use_ash) {
     sources += [
+      "ash/app_launcher_id.cc",
+      "ash/app_launcher_id.h",
       "ash/app_list/app_list_controller_ash.cc",
       "ash/app_list/app_list_controller_ash.h",
       "ash/app_list/app_list_presenter_delegate_mus.cc",
       "ash/app_list/app_list_presenter_delegate_mus.h",
       "ash/app_list/app_list_presenter_service.cc",
       "ash/app_list/app_list_presenter_service.h",
       "ash/app_list/app_list_service_ash.cc",
       "ash/app_list/app_list_service_ash.h",
       "ash/app_list/app_sync_ui_state_watcher.cc",
       "ash/app_list/app_sync_ui_state_watcher.h",
@@ skipping 2208 matching lines @@
       "test/test_confirm_bubble_model.cc",
       "test/test_confirm_bubble_model.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }