After uninstall, remove last item in Launcher folder

chrome/browser/ui/app_list/app_list_syncable_service.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/ui/app_list/app_list_syncable_service.h"
 
 #include "base/command_line.h"
 #include "base/strings/string_util.h"
 #include "chrome/browser/apps/drive/drive_app_provider.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 467 matching lines @@
   }
   SendSyncChange(sync_item, SyncChange::ACTION_UPDATE);
 }
 
 void AppListSyncableService::RemoveItem(const std::string& id) {
   RemoveSyncItem(id);
   model_->DeleteItem(id);
   PruneEmptySyncFolders();
 }
 
+void AppListSyncableService::RemoveUninstalledItem(const std::string& id) {
+  RemoveSyncItem(id);
+  model_->DeleteUninstalledItem(id);
+  PruneEmptySyncFolders();
+}
+
 void AppListSyncableService::UpdateItem(AppListItem* app_item) {
   // Check to see if the item needs to be moved to/from the OEM folder.
   if (!app_list::switches::IsFolderUIEnabled())
     return;
   bool is_oem = AppIsOem(app_item->id());
   if (!is_oem && app_item->folder_id() == kOemFolderId)
     model_->MoveItemToFolder(app_item, "");
   else if (is_oem && app_item->folder_id() != kOemFolderId)
     model_->MoveItemToFolder(app_item, kOemFolderId);
 }
@@ skipping 498 matching lines @@
   } else {
     res += " { " + item_name + " }";
     res += " [" + item_ordinal.ToDebugString() + "]";
     if (!parent_id.empty())
       res += " <" + parent_id.substr(0, 8) + ">";
   }
   return res;
 }
 
 }  // namespace app_list