[Sync] Update Type Info section of sync-internals.

components/sync/engine_impl/model_type_registry.cc

Index: components/sync/engine_impl/model_type_registry.cc
diff --git a/components/sync/engine_impl/model_type_registry.cc b/components/sync/engine_impl/model_type_registry.cc
index 7d15dd610422e49283b5ebc832dc479fda22e611..b6bc2e31a03ba31988af40cb60dafc0803876a2e 100644
--- a/components/sync/engine_impl/model_type_registry.cc
+++ b/components/sync/engine_impl/model_type_registry.cc
@@ -270,7 +270,9 @@ void ModelTypeRegistry::RequestEmitDebugInfo() {
   for (const auto& kv : data_type_debug_info_emitter_map_) {
     kv.second->EmitCommitCountersUpdate();
     kv.second->EmitUpdateCountersUpdate();
-    kv.second->EmitStatusCountersUpdate();
+    // Although this breaks encapsulation, don't emit status counters here.
+    // They've already been asked for manually on the UI thread because USS
+    // emitters don't have a working implementation yet.
   }
 }