Make List an abstract class.

runtime/vm/object.h

 // 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.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 348 matching lines @@
       uword ptr = reinterpret_cast<uword>(addr);
       Isolate::Current()->store_buffer()->AddPointer(ptr);
     }
   }
 
   RawObject* raw_;  // The raw object reference.
 
  private:
   static void InitializeObject(uword address, intptr_t id, intptr_t size);
 
-  static RawClass* CreateAndRegisterInterface(const char* cname,
-                                              const Script& script,
-                                              const Library& lib);
   static void RegisterClass(const Class& cls,
                             const String& name,
                             const Library& lib);
   static void RegisterPrivateClass(const Class& cls,
                                    const String& name,
                                    const Library& lib);
 
   /* Initialize the handle based on the raw_ptr in the presence of null. */
   static void initializeHandle(Object* obj, RawObject* raw_ptr) {
     if (raw_ptr != Object::null()) {
@@ skipping 5596 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_