Narrow the ownership of DriveUploader from DriveSystemService to DriveScheduler.

chrome/browser/chromeos/drive/search_metadata_unittest.cc

Index: chrome/browser/chromeos/drive/search_metadata_unittest.cc
diff --git a/chrome/browser/chromeos/drive/search_metadata_unittest.cc b/chrome/browser/chromeos/drive/search_metadata_unittest.cc
index 1be4c459efc85f01de69bbecde5971a9d6b7c338..bb9fb0c0abba8619e736aedfd00d49448af65139 100644
--- a/chrome/browser/chromeos/drive/search_metadata_unittest.cc
+++ b/chrome/browser/chromeos/drive/search_metadata_unittest.cc
@@ -63,7 +63,6 @@ class SearchMetadataTest : public testing::Test {
     file_system_.reset(new DriveFileSystem(profile_.get(),
                                            drive_cache_.get(),
                                            fake_drive_service_.get(),
-                                           NULL,  // uploader
                                            drive_webapps_registry_.get(),
                                            resource_metadata_.get(),
                                            blocking_task_runner_));