[Sync] Remove SyncEngine::UnregisterInvalidationIds

components/sync/driver/glue/sync_backend_host_impl.cc

Index: components/sync/driver/glue/sync_backend_host_impl.cc
diff --git a/components/sync/driver/glue/sync_backend_host_impl.cc b/components/sync/driver/glue/sync_backend_host_impl.cc
index b125c4482823f753def6fe15a43af09cb18650f1..f9f6462a6189fc6f00af6a2418d48101d7d9593c 100644
--- a/components/sync/driver/glue/sync_backend_host_impl.cc
+++ b/components/sync/driver/glue/sync_backend_host_impl.cc
@@ -184,9 +184,7 @@ void SyncBackendHostImpl::Shutdown(ShutdownReason reason) {
   DCHECK(!host_);
 
   if (invalidation_handler_registered_) {
-    if (reason == DISABLE_SYNC) {
-      UnregisterInvalidationIds();
-    }
+    CHECK(invalidator_->UpdateRegisteredInvalidationIds(this, ObjectIdSet()));
     invalidator_->UnregisterInvalidationHandler(this);
     invalidator_ = nullptr;
   }
@@ -203,12 +201,6 @@ void SyncBackendHostImpl::Shutdown(ShutdownReason reason) {
   registrar_ = nullptr;
 }
 
-void SyncBackendHostImpl::UnregisterInvalidationIds() {
-  if (invalidation_handler_registered_) {
-    CHECK(invalidator_->UpdateRegisteredInvalidationIds(this, ObjectIdSet()));
-  }
-}
-
 ModelTypeSet SyncBackendHostImpl::ConfigureDataTypes(
     ConfigureReason reason,
     const DataTypeConfigStateMap& config_state_map,