Remove android_java_ui as it is not used

chrome/browser/bookmarks/bookmark_model_factory.cc

 // Copyright (c) 2012 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/bookmarks/bookmark_model_factory.h"
 
 #include "base/command_line.h"
 #include "base/deferred_sequenced_task_runner.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
@@ skipping 53 matching lines @@
   Profile* profile = Profile::FromBrowserContext(context);
   BookmarkModel* bookmark_model =
       new BookmarkModel(base::MakeUnique<ChromeBookmarkClient>(
           profile, ManagedBookmarkServiceFactory::GetForProfile(profile)));
   bookmark_model->Load(profile->GetPrefs(), profile->GetPath(),
                        StartupTaskRunnerServiceFactory::GetForProfile(profile)
                            ->GetBookmarkTaskRunner(),
                        content::BrowserThread::GetTaskRunnerForThread(
                            content::BrowserThread::UI));
   bool register_bookmark_undo_service_as_observer = true;
-#if !BUILDFLAG(ANDROID_JAVA_UI)
+#if !defined(OS_ANDROID)
   register_bookmark_undo_service_as_observer =
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableBookmarkUndo);
-#endif  // !BUILDFLAG(ANDROID_JAVA_UI)
+#endif  // !defined(OS_ANDROID)
   if (register_bookmark_undo_service_as_observer)
     BookmarkUndoServiceFactory::GetForProfile(profile)->Start(bookmark_model);
 
   return bookmark_model;
 }
 
 void BookmarkModelFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   bookmarks::RegisterProfilePrefs(registry);
 }
 
 content::BrowserContext* BookmarkModelFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextRedirectedInIncognito(context);
 }
 
 bool BookmarkModelFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }