Trim code from sync's ServerConnectionManager

sync/engine/sync_scheduler.h

Index: sync/engine/sync_scheduler.h
diff --git a/sync/engine/sync_scheduler.h b/sync/engine/sync_scheduler.h
index 85404844e3f7b5a214b764dcedffd571050a1c9c..d5ff4c0a44522a1223f4be14e9118b5313c491f9 100644
--- a/sync/engine/sync_scheduler.h
+++ b/sync/engine/sync_scheduler.h
@@ -346,7 +346,7 @@ class SyncScheduler : public sessions::SyncSession::Delegate {
                                 SyncerStep* start,
                                 SyncerStep* end);
 
-  // Used to update |server_connection_ok_|, see below.
+  // Used to update |connection_code_|, see below.
   void UpdateServerConnectionManagerStatus(
       HttpResponse::ServerConnectionCode code);
 
@@ -394,9 +394,6 @@ class SyncScheduler : public sessions::SyncSession::Delegate {
   // since the nudges could be for different types. Current impl doesn't care.
   base::TimeTicks last_sync_session_end_time_;
 
-  // Have we observed a valid server connection?
-  bool server_connection_ok_;
-
   // The latest connection code we got while trying to connect.
   HttpResponse::ServerConnectionCode connection_code_;