gRPC migration

Change-Id: Ib390f6dde0d5a8d6db12ccd7da41135570ad1354
diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go
index 37f254d..e4dfb12 100644
--- a/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go
+++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go
@@ -144,6 +144,7 @@
 	}
 
 	// Handle source locations.
+	f.L2.Locations.File = f
 	for _, loc := range fd.GetSourceCodeInfo().GetLocation() {
 		var l protoreflect.SourceLocation
 		// TODO: Validate that the path points to an actual declaration?