Rename Service to TracingService.

Bug: 74331089
Change-Id: Icdfa59d23ed661f0f103733488513d7a4e817b23
diff --git a/test/test_helper.h b/test/test_helper.h
index d7afc86..2bd4cf0 100644
--- a/test/test_helper.h
+++ b/test/test_helper.h
@@ -67,7 +67,7 @@
 
   TaskRunnerThread service_thread_;
   TaskRunnerThread producer_thread_;
-  std::unique_ptr<Service::ConsumerEndpoint> endpoint_;  // Keep last.
+  std::unique_ptr<TracingService::ConsumerEndpoint> endpoint_;  // Keep last.
 };
 
 }  // namespace perfetto