Migrate google_service_root_test.cpp from Gerrit to Google3.

Google-Bug-Id:548091226
PiperOrigin-RevId: 970680618
Change-Id: I647c579ec1be960f00d6da99c6fe5dacd149470c

gbmcweb

diff --git a/gbmcweb b/gbmcweb
index c48e8fd..a2a0c15 160000
--- a/gbmcweb
+++ b/gbmcweb
@@ -1 +1 @@
-Subproject commit c48e8fda32106d965f2dc9b6df8a1f3bb93e9504
+Subproject commit a2a0c151f884e36a2d3d096ef4a8ac17c8ef2a1f