[Sync] Services can now always assume processor exists.

components/sync/model/stub_model_type_service.cc

Index: components/sync/model/stub_model_type_service.cc
diff --git a/components/sync/model/stub_model_type_service.cc b/components/sync/model/stub_model_type_service.cc
index 266a0daf47ea589679ec72f536aee0116ebbe3b9..591232f75e509703a7abc13f76c3d38b9f0711ba 100644
--- a/components/sync/model/stub_model_type_service.cc
+++ b/components/sync/model/stub_model_type_service.cc
@@ -49,10 +49,4 @@ std::string StubModelTypeService::GetStorageKey(const EntityData& entity_data) {
   return std::string();
 }
 
-void StubModelTypeService::OnChangeProcessorSet() {}
-
-bool StubModelTypeService::HasChangeProcessor() const {
-  return change_processor() != nullptr;
-}
-
 }  // namespace syncer