Add google_prod_creds to the list of auth mechanisms am: f7574b5484

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/18890432

Change-Id: I93471e06ccadb585f9601d1ae2fd17117d1d8d4d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/ui/build/config.go b/ui/build/config.go
index 28ce57d..46a12fd 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -616,7 +616,12 @@
 }
 
 func (c *configImpl) rbeAuth() (string, string) {
-	credFlags := []string{"use_application_default_credentials", "use_gce_credentials", "credential_file"}
+	credFlags := []string{
+		"use_application_default_credentials",
+		"use_gce_credentials",
+		"credential_file",
+		"use_google_prod_creds",
+	}
 	for _, cf := range credFlags {
 		for _, f := range []string{"RBE_" + cf, "FLAG_" + cf} {
 			if v, ok := c.environ.Get(f); ok {