Make List an abstract class.

runtime/vm/parser.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/parser.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/compiler_stats.h"
@@ skipping 8760 matching lines @@
                    String::Handle(element_type.UserVisibleName()).ToCString());
         }
       }
       const_list.SetAt(i, elem->AsLiteralNode()->literal());
     }
     const_list ^= const_list.Canonicalize();
     const_list.MakeImmutable();
     return new LiteralNode(literal_pos, const_list);
   } else {
     // Factory call at runtime.
-    // TODO(regis): Once _ListImpl is removed, use Symbols::List() instead of
-    // Symbols::ListImplementation() on the following line.
-    String& factory_class_name = String::Handle(Symbols::ListImplementation());
+    String& factory_class_name = String::Handle(Symbols::List());
     const Class& factory_class =
         Class::Handle(LookupCoreClass(factory_class_name));
     ASSERT(!factory_class.IsNull());
     const String& factory_method_name =
         String::Handle(Symbols::ListLiteralFactory());
     const Function& factory_method = Function::ZoneHandle(
         factory_class.LookupFactory(factory_method_name));
     ASSERT(!factory_method.IsNull());
     if (!type_arguments.IsNull() &&
         !type_arguments.IsInstantiated() &&
@@ skipping 1251 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart