Service Manager: Reduce InterfaceProvider spec spam to DVLOG(1)

services/service_manager/public/cpp/lib/interface_registry.cc

Index: services/service_manager/public/cpp/lib/interface_registry.cc
diff --git a/services/service_manager/public/cpp/lib/interface_registry.cc b/services/service_manager/public/cpp/lib/interface_registry.cc
index ba2ea2f9dab270a0e6d9e9c36f0c647d030efb86..9fb605d810022f269ca87b9a2e6c970795915620 100644
--- a/services/service_manager/public/cpp/lib/interface_registry.cc
+++ b/services/service_manager/public/cpp/lib/interface_registry.cc
@@ -214,7 +214,7 @@ void InterfaceRegistry::GetInterface(const std::string& interface_name,
 
       std::stringstream details;
       Serialize(&details);
-      LOG(WARNING) << details.str();
+      DVLOG(1) << details.str();
     }
   } else {
     std::stringstream error;
@@ -226,7 +226,7 @@ void InterfaceRegistry::GetInterface(const std::string& interface_name,
 
     std::stringstream details;
     Serialize(&details);
-    LOG(WARNING) << details.str();
+    DVLOG(1) << details.str();
   }
 }