Do not ignore core libraries from CHA analysis

runtime/vm/cha.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/cha.h"
 #include "vm/class_table.h"
 #include "vm/flags.h"
 #include "vm/freelist.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
-// Return true if the class is private to our internal libraries (not extendable
-// or implementable after startup). Therefore, we don't need to register
-// optimized code for invalidation for those classes.
-// TODO(fschneider): Allow more libraries.
-static bool IsKnownPrivateClass(const Class& type_class) {
-  if (!Library::IsPrivate(String::Handle(type_class.Name()))) return false;
-  const Library& library = Library::Handle(type_class.library());
-  if (library.raw() == Library::CoreLibrary()) return true;
-  if (library.raw() == Library::CollectionLibrary()) return true;
-  if (library.raw() == Library::TypedDataLibrary()) return true;
-  if (library.raw() == Library::MathLibrary()) return true;
-  return false;
-}
-
-
 void CHA::AddToLeafClasses(const Class& cls) {
-  if (IsKnownPrivateClass(cls)) return;
-
   for (intptr_t i = 0; i < leaf_classes_.length(); i++) {
     if (leaf_classes_[i]->raw() == cls.raw()) {
       return;
     }
   }
   leaf_classes_.Add(&Class::ZoneHandle(isolate_, cls.raw()));
 }
 
 
 bool CHA::HasSubclasses(const Class& cls) {
@@ skipping 69 matching lines @@
     }
     if (HasOverride(direct_subclass, function_name)) {
       return true;
     }
   }
   AddToLeafClasses(cls);
   return false;
 }
 
 }  // namespace dart