Add CC_WRAPPER support

Change-Id: If252c41ec1e3d708f599990c72be69dc8117ae14
diff --git a/cc/builder.go b/cc/builder.go
index b84c928..f016cbd 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -43,7 +43,7 @@
 		blueprint.RuleParams{
 			Depfile:     "${out}.d",
 			Deps:        blueprint.DepsGCC,
-			Command:     "$relPwd $ccCmd -c $cFlags -MD -MF ${out}.d -o $out $in",
+			Command:     "$relPwd ${config.CcWrapper}$ccCmd -c $cFlags -MD -MF ${out}.d -o $out $in",
 			CommandDeps: []string{"$ccCmd"},
 			Description: "cc $out",
 		},