diff --git a/ui/build/config.go b/ui/build/config.go
index 9b19ede..5b9d10a 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -787,6 +787,48 @@
 	return false
 }
 
+func (c *configImpl) UseRBEJAVAC() bool {
+	if !c.UseRBE() {
+		return false
+	}
+
+	if v, ok := c.environ.Get("RBE_JAVAC"); ok {
+		v = strings.TrimSpace(v)
+		if v != "" && v != "false" {
+			return true
+		}
+	}
+	return false
+}
+
+func (c *configImpl) UseRBER8() bool {
+	if !c.UseRBE() {
+		return false
+	}
+
+	if v, ok := c.environ.Get("RBE_R8"); ok {
+		v = strings.TrimSpace(v)
+		if v != "" && v != "false" {
+			return true
+		}
+	}
+	return false
+}
+
+func (c *configImpl) UseRBED8() bool {
+	if !c.UseRBE() {
+		return false
+	}
+
+	if v, ok := c.environ.Get("RBE_D8"); ok {
+		v = strings.TrimSpace(v)
+		if v != "" && v != "false" {
+			return true
+		}
+	}
+	return false
+}
+
 func (c *configImpl) StartRBE() bool {
 	if !c.UseRBE() {
 		return false