Make the VM's dart:core and dart:async library patches clean.

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/flags.h"
 
 #ifndef DART_PRECOMPILED_RUNTIME
 
 #include "lib/invocation_mirror.h"
@@ skipping 12997 matching lines @@
     // Construct the map object.
     const Class& immutable_map_class =
         Class::Handle(Z, Library::LookupCoreClass(Symbols::ImmutableMap()));
     ASSERT(!immutable_map_class.IsNull());
     // If the immutable map class extends other parameterized classes, we need
     // to adjust the type argument vector. This is currently not the case.
     ASSERT(immutable_map_class.NumTypeArguments() == 2);
     ArgumentListNode* constr_args = new (Z) ArgumentListNode(TokenPos());
     constr_args->Add(new (Z) LiteralNode(literal_pos, key_value_array));
     const Function& map_constr = Function::ZoneHandle(
-        Z, immutable_map_class.LookupConstructor(Library::PrivateCoreLibName(
-               Symbols::ImmutableMapConstructor())));
+        Z, immutable_map_class.LookupConstructorAllowPrivate(
+               Symbols::ImmutableMapConstructor()));
     ASSERT(!map_constr.IsNull());
     const Object& constructor_result = Object::Handle(
         Z, EvaluateConstConstructorCall(immutable_map_class, map_type_arguments,
                                         map_constr, constr_args));
     if (constructor_result.IsUnhandledException()) {
       ReportErrors(Error::Cast(constructor_result), script_, literal_pos,
                    "error executing const Map constructor");
     } else {
       const Instance& const_instance = Instance::Cast(constructor_result);
       CacheConstantValue(literal_pos, const_instance);
@@ skipping 1454 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED_RUNTIME