Remove android_java_ui as it is not used

chrome/browser/download/download_path_reservation_tracker_unittest.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 <stddef.h>
 #include <stdint.h>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 485 matching lines @@
     bool create_directory = false;
     CallGetReservedPath(
         item.get(),
         path,
         create_directory,
         conflict_action,
         &reserved_path,
         &verified);
     // Verification fails.
     EXPECT_FALSE(verified);
-#if BUILDFLAG(ANDROID_JAVA_UI)
+#if defined(OS_ANDROID)
     EXPECT_TRUE(reserved_path.empty());
 #else
     EXPECT_EQ(path.BaseName().value(), reserved_path.BaseName().value());
 #endif
   }
   SetDownloadItemState(item.get(), DownloadItem::COMPLETE);
 }
 
 // If the default download directory doesn't exist, then it should be
 // created. But only if we are actually going to create the download path there.
@@ skipping 192 matching lines @@
       create_directory,
       conflict_action,
       &reserved_path,
       &verified);
   // We cannot truncate a path with very long extension.
   EXPECT_FALSE(verified);
   SetDownloadItemState(item.get(), DownloadItem::COMPLETE);
 }
 
 #endif  // Platforms that support filename truncation.