Add NINJA_NINJAGO executor pseudo enum.

This aligns with the current plan for soong's build engine configuration.

Bug: 390901696
Change-Id: I93e1d1707e3320bd70670b8fb948f3d87f5d9e7b
diff --git a/ui/build/config.go b/ui/build/config.go
index 4f2d213..5ec42cc 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -63,6 +63,7 @@
 	NINJA_NINJA
 	NINJA_N2
 	NINJA_SISO
+	NINJA_NINJAGO
 )
 
 type Config struct{ *configImpl }
@@ -323,6 +324,8 @@
 		ret.ninjaCommand = NINJA_N2
 	case "siso":
 		ret.ninjaCommand = NINJA_SISO
+	case "ninjago":
+		ret.ninjaCommand = NINJA_NINJAGO
 	default:
 		if os.Getenv("SOONG_USE_N2") == "true" {
 			ret.ninjaCommand = NINJA_N2
@@ -1339,6 +1342,10 @@
 }
 
 func (c *configImpl) UseABFS() bool {
+	if c.ninjaCommand == NINJA_NINJAGO {
+		return true
+	}
+
 	if v, ok := c.environ.Get("NO_ABFS"); ok {
 		v = strings.ToLower(strings.TrimSpace(v))
 		if v == "true" || v == "1" {