Remove usage of FOR_EACH_OBSERVER macro in components/sync

components/sync/driver/generic_change_processor.cc

Index: components/sync/driver/generic_change_processor.cc
diff --git a/components/sync/driver/generic_change_processor.cc b/components/sync/driver/generic_change_processor.cc
index bb2d4bd5636a65796d8ed5e6086e383edb5bb30e..2cdb6d92173d839d117a1dcc6616a9f0247dcccc 100644
--- a/components/sync/driver/generic_change_processor.cc
+++ b/components/sync/driver/generic_change_processor.cc
@@ -693,8 +693,8 @@ void GenericChangeProcessor::UploadAllAttachmentsNotOnServer() {
 void GenericChangeProcessor::NotifyLocalChangeObservers(
     const syncable::Entry* current_entry,
     const SyncChange& change) {
-  FOR_EACH_OBSERVER(LocalChangeObserver, local_change_observers_,
-                    OnLocalChange(current_entry, change));
+  for (auto& observer : local_change_observers_)
+    observer.OnLocalChange(current_entry, change);
 }
 
 std::unique_ptr<AttachmentService>