Simplify various name flavors in VM.

runtime/lib/mirrors.cc

Index: runtime/lib/mirrors.cc
diff --git a/runtime/lib/mirrors.cc b/runtime/lib/mirrors.cc
index 10b39cefce59c2a4bf1f3d55409179b763b40705..e1d5ba9674dfab02b2ea114d982e37fb56d057d4 100644
--- a/runtime/lib/mirrors.cc
+++ b/runtime/lib/mirrors.cc
@@ -270,7 +270,7 @@ static RawInstance* CreateMethodMirror(const Function& func,
   args.SetAt(0, MirrorReference::Handle(MirrorReference::New(func)));
 
   String& name = String::Handle(func.name());
-  name = String::IdentifierPrettyNameRetainPrivate(name);
+  name = String::ScrubNameRetainPrivate(name);
   args.SetAt(1, name);
   args.SetAt(2, owner_mirror);
   args.SetAt(3, instantiator);