[Sync] Add histograms for cookie jar state on Sessions commit

sync/engine/syncer.cc

Index: sync/engine/syncer.cc
diff --git a/sync/engine/syncer.cc b/sync/engine/syncer.cc
index eddfb491e4f47ef9ca5533e3152d65d03db510d1..23d8c961752f77dea95cfe3cc8ab5b29cd17e78a 100644
--- a/sync/engine/syncer.cc
+++ b/sync/engine/syncer.cc
@@ -179,13 +179,14 @@ SyncerError Syncer::BuildAndPostCommits(ModelTypeSet requested_types,
   // errors from the ServerConnectionManager if an exist has been requested.
   // However, it doesn't hurt to check it anyway.
   while (!ExitRequested()) {
-    std::unique_ptr<Commit> commit(Commit::Init(
-        requested_types, session->context()->GetEnabledTypes(),
-        session->context()->max_commit_batch_size(),
-        session->context()->account_name(),
-        session->context()->directory()->cache_guid(),
-        session->context()->cookie_jar_mismatch(), commit_processor,
-        session->context()->extensions_activity()));
+    std::unique_ptr<Commit> commit(
+        Commit::Init(requested_types, session->context()->GetEnabledTypes(),
+                     session->context()->max_commit_batch_size(),
+                     session->context()->account_name(),
+                     session->context()->directory()->cache_guid(),
+                     session->context()->cookie_jar_mismatch(),
+                     session->context()->cookie_jar_empty(), commit_processor,
+                     session->context()->extensions_activity()));
     if (!commit) {
       break;
     }