Make gitiles calls as Self instead of Anon

common/api/gitiles/gitiles.go

Index: common/api/gitiles/gitiles.go
diff --git a/common/api/gitiles/gitiles.go b/common/api/gitiles/gitiles.go
index f9381706b0a65ff6c749a4539dd8a9dd2453cff4..39f71f52a378b8e0b9dc024384d8381147d7f9d8 100644
--- a/common/api/gitiles/gitiles.go
+++ b/common/api/gitiles/gitiles.go
@@ -84,7 +84,9 @@ func Log(c context.Context, repoURL, treeish string, limit int) ([]Commit, error
 	if err != nil {
 		return nil, err
 	}
-	t, err := auth.GetRPCTransport(c, auth.NoAuth)
+	t, err := auth.GetRPCTransport(c, auth.AsSelf, auth.WithScopes(
+		"https://www.googleapis.com/auth/gerritcodereview",
+	))
 	if err != nil {
 		return nil, err
 	}