Change linux default hidden file save directory to XDG_DATA_HOME

content/browser/download/download_manager_impl_unittest.cc

Index: content/browser/download/download_manager_impl_unittest.cc
diff --git a/content/browser/download/download_manager_impl_unittest.cc b/content/browser/download/download_manager_impl_unittest.cc
index b7eb3d243ac73de478a7a93664063ab720f4ba5f..df34c0144fde23f03d05538c722295cf7710ea33 100644
--- a/content/browser/download/download_manager_impl_unittest.cc
+++ b/content/browser/download/download_manager_impl_unittest.cc
@@ -547,8 +547,10 @@ TEST_F(DownloadManagerTest, StartDownload) {
   EXPECT_CALL(GetMockDownloadManagerDelegate(), GetNextId(_))
       .WillOnce(RunCallback<0>(local_id));
 
+#if !defined(OS_LINUX) || defined(OS_CHROMEOS)
   // Doing nothing will set the default download directory to null.
   EXPECT_CALL(GetMockDownloadManagerDelegate(), GetSaveDir(_, _, _, _));
+#endif
   EXPECT_CALL(GetMockDownloadManagerDelegate(),
               ApplicationClientIdForFileScanning())
       .WillRepeatedly(Return("client-id"));