Fix VM implementation of CastError not to extend TypeError (issue 5280).

tests/language/language.status

 # 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.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 # In order to maintain maximum test coverage for all builds,
 # please use the following procedure to mark a test
 # failed on architectures other than the one you are working on.
@@ skipping 29 matching lines @@
 # Regular bugs which should be fixed.
 const_init6_negative_test: Fail       # Issue 811
 super_first_constructor_test: Fail # Issue 1372.
 
 parameter_initializer6_negative_test: Fail # Issue 3502
 
 named_parameters_aggregated_test/05: Fail # Compile-time error reported instead of static type warning.
 
 lazy_static3_test: Fail # Issue 3558
 
-type_error_test: Fail # http://dartbug.com/5280
-
 # DartC specific tests that should not be run by the VM
 *dartc_test: Skip
 *dartc_negative_test: Skip
 
 compile_time_constant10_test/none: Fail # issue 5214
 
 export_cyclic_test: Fail, Crash # issue 6060
 duplicate_export_negative_test: Fail # issue 6134
 type_annotation_test/04: Fail # Issue 6970
 type_annotation_test/06: Fail # Issue 6973
@@ skipping 221 matching lines @@
 compile_time_constant_checked2_test/04: Fail, OK
 compile_time_constant_checked2_test/05: Fail, OK
 compile_time_constant_checked2_test/06: Fail, OK
 compile_time_constant_checked3_test/01: Fail, OK
 compile_time_constant_checked3_test/02: Fail, OK
 compile_time_constant_checked3_test/03: Fail, OK
 compile_time_constant_checked3_test/04: Fail, OK
 compile_time_constant_checked3_test/05: Fail, OK
 compile_time_constant_checked3_test/06: Fail, OK
 
-type_error_test: Fail, OK # VM bug: http://dartbug.com/5280
+positional_parameters_type_test: Fail # Triage this.
 
 type_variable_field_initializer_closure_test: Crash # VM bug: issue 8847
 closures_initializer_test: Crash # VM bug: issue 8847
 closures_initializer2_test: Crash # VM bug: issue 8847
 
 bound_closure_equality_test: Fail # Issue 10849
 
 [ $compiler == dart2dart && $minified ]
 super_getter_setter_test: Fail # Issue 11065.
 
 # TODO(tball): Assign proper bug numbers.
 class_literal_test: Fail
 
 import_core_prefix_test: Pass
 prefix22_test: Pass
 invocation_mirror_test: Fail, OK # hardcoded names.
 super_call4_test: Fail, OK # hardcoded names.
 
 
 [ $arch == simarm || $arch == arm ]
 try_catch4_test: Crash, Fail
 
 
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 try_catch4_test: Fail