Make runtime_resource_overlay product specific.

When mk2bp'ing a runtime_resource_overlay module, make it product
specific by default so that it reflects how the current make
configuration works.

Bug: 155783598
Test: bpfix_test.go
Change-Id: Icafa8228fe65ecc5b33ad80ad721e7997fbff383

androidmk/androidmk/androidmk.go

@@ -48,6 +48,22 @@ var invalidVariableStringToReplacement = map[string]string{
 	"-": "_dash_",
 }
 
+// Fix steps that should only run in the androidmk tool, i.e. should only be applied to
+// newly-converted Android.bp files.
+var fixSteps = bpfix.FixStepsExtension{
+	Name: "androidmk",
+	Steps: []bpfix.FixStep{
+		{
+			Name: "RewriteRuntimeResourceOverlay",
+			Fix:  bpfix.RewriteRuntimeResourceOverlay,
+		},
+	},
+}
+
+func init() {
+	bpfix.RegisterFixStepExtension(&fixSteps)
+}
+
 func (f *bpFile) insertComment(s string) {
 	f.comments = append(f.comments, &bpparser.CommentGroup{
 		Comments: []*bpparser.Comment{