Remove android_java_ui as it is not used

chrome/browser/history/chrome_history_backend_client.cc

 // 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.
 
 #include "chrome/browser/history/chrome_history_backend_client.h"
 
 #include "build/build_config.h"
 #include "chrome/common/channel_info.h"
 #include "chrome/common/features.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/version_info/version_info.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "url/gurl.h"
 
-#if BUILDFLAG(ANDROID_JAVA_UI)
+#if defined(OS_ANDROID)
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "chrome/browser/history/android/android_provider_backend.h"
 #include "components/history/core/browser/history_backend.h"
 #endif
 
-#if BUILDFLAG(ANDROID_JAVA_UI)
+#if defined(OS_ANDROID)
 namespace {
 const base::FilePath::CharType kAndroidCacheFilename[] =
     FILE_PATH_LITERAL("AndroidCache");
 }
 #endif
 
 ChromeHistoryBackendClient::ChromeHistoryBackendClient(
     bookmarks::BookmarkModel* bookmark_model)
     : bookmark_model_(bookmark_model) {
 }
@@ skipping 38 matching lines @@
   version_info::Channel channel = chrome::GetChannel();
   return channel != version_info::Channel::STABLE &&
          channel != version_info::Channel::BETA;
 }
 
 bool ChromeHistoryBackendClient::IsWebSafe(const GURL& url) {
   return content::ChildProcessSecurityPolicy::GetInstance()->IsWebSafeScheme(
       url.scheme());
 }
 
-#if BUILDFLAG(ANDROID_JAVA_UI)
+#if defined(OS_ANDROID)
 void ChromeHistoryBackendClient::OnHistoryBackendInitialized(
     history::HistoryBackend* history_backend,
     history::HistoryDatabase* history_database,
     history::ThumbnailDatabase* thumbnail_database,
     const base::FilePath& history_dir) {
   DCHECK(history_backend);
   if (thumbnail_database) {
     history_backend->SetUserData(
         history::AndroidProviderBackend::GetUserDataKey(),
         new history::AndroidProviderBackend(
             history_dir.Append(kAndroidCacheFilename), history_database,
             thumbnail_database, this, history_backend));
   }
 }
 
 void ChromeHistoryBackendClient::OnHistoryBackendDestroyed(
     history::HistoryBackend* history_backend,
     const base::FilePath& history_dir) {
   sql::Connection::Delete(history_dir.Append(kAndroidCacheFilename));
 }
-#endif  // BUILDFLAG(ANDROID_JAVA_UI)
+#endif  // defined(OS_ANDROID)