Implement Function.apply in vm (issue 5670).

runtime/lib/lib_sources.gypi

 # Copyright (c) 2011, 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.
 
 # Sources visible via default library.
 
 {
   'sources': [
     'bool_patch.dart',
     'date.cc',
     'date_patch.dart',
     'array.cc',
     'array.dart',
     'array_patch.dart',
     'double.cc',
     'double.dart',
     'double_patch.dart',
     'error.cc',
     'error.dart',
     'errors_patch.dart',
     'error.h',
     'expando_patch.dart',
+    'function.cc',
     'function_patch.dart',
     'growable_array.cc',
     'growable_array.dart',
     'identical_patch.dart',
     'immutable_map.dart',
     'integers.cc',
     'integers.dart',
     'integers_patch.dart',
     'invocation_mirror_patch.dart',
     'map_patch.dart',
     'object.cc',
     'object_patch.dart',
     'print_patch.dart',
     'regexp.cc',
     'regexp_jsc.cc',
     'regexp_jsc.h',
     'regexp_patch.dart',
     'stopwatch_patch.dart',
     'stopwatch.cc',
     'string.cc',
     'string_base.dart',
     'string_patch.dart',
     'type_patch.dart',
     'string_patch.dart',
     'weak_property.dart',
     'weak_property.cc',
   ],
 }