Use delete journal to remove bookmarks that are already deleted in sync model

sync/engine/syncer_unittest.cc

Index: sync/engine/syncer_unittest.cc
diff --git a/sync/engine/syncer_unittest.cc b/sync/engine/syncer_unittest.cc
index 2bfcdf814288ff76205e672d451a61963938d3d0..c79c612849b5a95929d09b83a0ba703c09263170 100644
--- a/sync/engine/syncer_unittest.cc
+++ b/sync/engine/syncer_unittest.cc
@@ -207,7 +207,7 @@ class SyncerTest : public testing::Test,
   }
 
   virtual void SetUp() {
-    dir_maker_.SetUp();
+    dir_maker_.SetUp(NULL);
     mock_server_.reset(new MockConnectionManager(directory()));
     EnableDatatype(BOOKMARKS);
     EnableDatatype(NIGORI);