[Sync] Delete dead code from sync_scheduler_impl

components/sync/engine_impl/sync_scheduler_impl.cc

Index: components/sync/engine_impl/sync_scheduler_impl.cc
diff --git a/components/sync/engine_impl/sync_scheduler_impl.cc b/components/sync/engine_impl/sync_scheduler_impl.cc
index 054e917106323bacbd24e25d640627db84e47351..d9d72533754ab6518a7f42bb63b25b7d3a7f23e3 100644
--- a/components/sync/engine_impl/sync_scheduler_impl.cc
+++ b/components/sync/engine_impl/sync_scheduler_impl.cc
@@ -24,11 +24,10 @@
 
 using base::TimeDelta;
 using base::TimeTicks;
+using sync_pb::GetUpdatesCallerInfo;
 
 namespace syncer {
 
-using sync_pb::GetUpdatesCallerInfo;
-
 namespace {
 
 bool IsConfigRelatedUpdateSourceValue(
@@ -119,23 +118,6 @@ ClearParams::ClearParams(const base::Closure& report_success_task)
 ClearParams::ClearParams(const ClearParams& other) = default;
 ClearParams::~ClearParams() {}
 
-GetUpdatesCallerInfo::GetUpdatesSource GetUpdatesFromNudgeSource(
-    NudgeSource source) {
-  switch (source) {
-    case NUDGE_SOURCE_NOTIFICATION:
-      return GetUpdatesCallerInfo::NOTIFICATION;
-    case NUDGE_SOURCE_LOCAL:
-      return GetUpdatesCallerInfo::LOCAL;
-    case NUDGE_SOURCE_LOCAL_REFRESH:
-      return GetUpdatesCallerInfo::DATATYPE_REFRESH;
-    case NUDGE_SOURCE_UNKNOWN:
-      return GetUpdatesCallerInfo::UNKNOWN;
-    default:
-      NOTREACHED();
-      return GetUpdatesCallerInfo::UNKNOWN;
-  }
-}
-
 // Helper macros to log with the syncer thread name; useful when there
 // are multiple syncer threads involved.
 
@@ -163,11 +145,7 @@ SyncSchedulerImpl::SyncSchedulerImpl(const std::string& name,
       cycle_context_(context),
       next_sync_cycle_job_priority_(NORMAL_PRIORITY),
       ignore_auth_credentials_(ignore_auth_credentials),
-      weak_ptr_factory_(this),
-      weak_ptr_factory_for_weak_handle_(this) {
-  weak_handle_this_ =
-      MakeWeakHandle(weak_ptr_factory_for_weak_handle_.GetWeakPtr());
-}
+      weak_ptr_factory_(this) {}
 
 SyncSchedulerImpl::~SyncSchedulerImpl() {
   DCHECK(CalledOnValidThread());