[Sync] Split DirectoryChangeListener for thread-safety

chrome/browser/sync/engine/verify_updates_command_unittest.cc

Index: chrome/browser/sync/engine/verify_updates_command_unittest.cc
diff --git a/chrome/browser/sync/engine/verify_updates_command_unittest.cc b/chrome/browser/sync/engine/verify_updates_command_unittest.cc
index 0c27b99841d74aa4452863d0b9a9ed4c934733c2..9f802ee0d190941747a3650647a35ea5083216e7 100644
--- a/chrome/browser/sync/engine/verify_updates_command_unittest.cc
+++ b/chrome/browser/sync/engine/verify_updates_command_unittest.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/tracked.h"
 #include "chrome/browser/sync/engine/verify_updates_command.h"
 #include "chrome/browser/sync/protocol/bookmark_specifics.pb.h"
 #include "chrome/browser/sync/sessions/sync_session.h"
@@ -43,7 +44,7 @@ class VerifyUpdatesCommandTest : public SyncerCommandTest {
                        const syncable::ModelType& type) {
     ScopedDirLookup dir(syncdb()->manager(), syncdb()->name());
     ASSERT_TRUE(dir.good());
-    WriteTransaction trans(dir, UNITTEST, __FILE__, __LINE__);
+    WriteTransaction trans(dir, UNITTEST, FROM_HERE);
     MutableEntry entry(&trans, syncable::CREATE_NEW_UPDATE_ITEM,
         Id::CreateFromServerId(item_id));
     ASSERT_TRUE(entry.good());