refactor emitMemberName to be used more consistently

test/codegen/expect/names.js

Index: test/codegen/expect/names.js
diff --git a/test/codegen/expect/names.js b/test/codegen/expect/names.js
index 7b68b9a6546baeeb1737e59f9a4b120233ad613f..548fd7ec2dc82f2792cb5e9a2baaf23573c00cee 100644
--- a/test/codegen/expect/names.js
+++ b/test/codegen/expect/names.js
@@ -26,8 +26,8 @@ var names;
     core.print(exports.exports);
     core.print(new Foo()[_foo$]());
     core.print(_foo());
-    core.print(new Frame['caller*'](new core.List.from([1, 2, 3])));
-    let eval$ = Frame['callee*'];
+    core.print(new Frame.caller(new core.List.from([1, 2, 3])));
+    let eval$ = Frame.callee;
     core.print(eval$);
   }
   // Exports: