Update test status files. Issue #24990.

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.
 
 [ $compiler == none ]
 built_in_identifier_prefix_test: Fail # Issue 6970
 tearoff_constructor_basic_test: Skip # Crashes in checked mode -- hausner investigating
@@ skipping 45 matching lines @@
 named_parameters_type_test/01: Fail # Issue 14651.
 named_parameters_type_test/02: Fail # Issue 14651.
 named_parameters_type_test/03: Fail # Issue 14651.
 positional_parameters_type_test/01: Fail # Issue 14651.
 positional_parameters_type_test/02: Fail # Issue 14651.
 type_checks_in_factory_method_test: Fail # Issue 14651.
 vm/type_vm_test: Fail # Issue 14651.
 
 [ $compiler == none && ( $runtime == dartium || $runtime == drt || $runtime == ContentShellOnAndroid) ]
 issue13474_test: Pass, Fail # Issue 14651.
-vm/optimized_guarded_field_isolates_test: Fail # Issue 13921.
+vm/optimized_guarded_field_isolates_test: Skip # Passes mysteriously, issues 24990, 13921.
 main_test/01: Fail # Issue 20028
 main_test/02: Fail # Issue 20028
 main_test/04: Fail # Issue 20028
 main_test/05: Fail # Issue 20028
 main_test/21: Fail # Issue 20028
 main_test/42: Fail # Issue 20028
 mirror_in_static_init_test: Fail # Issue 22071
 vm/debug_break_enabled_vm_test/*: Skip # Issue 14651.
 
 [ $compiler == none && $runtime == dartium && $system == linux && $arch != x64 ]
@@ skipping 13 matching lines @@
 [ $compiler == none && ($runtime == dartium || $runtime == drt || $runtime == ContentShellOnAndroid) && $mode == debug ]
 large_class_declaration_test: SkipSlow # Times out. Issue 20352
 
 [ $compiler == none && $runtime == ContentShellOnAndroid ]
 gc_test: SkipSlow # Times out flakily. Issue 20956
 
 [ $compiler == none && $runtime == vm && ( $arch == simarm || $arch == arm || $arch == simarmv5te || $arch == armv5te || $arch == simarm64 || $arch == arm64 || $arch == simmips || $arch == mips) ]
 vm/load_to_load_unaligned_forwarding_vm_test: Pass, Crash # Unaligned offset. Issue 22151
 
 [ $compiler == none && ( $runtime == dartium || $runtime == drt ) ]
-issue23244_test: Fail # Can't run spawnFunction on dartium.
+issue23244_test: Skip # Issue 24990
 
 [ $compiler == none && ($runtime == vm || $runtime == drt || $runtime == dartium) && $arch == ia32 ]
 vm/regress_24517_test: Pass, Fail # Issue 24517.
 
 [ $noopt ]
 # Imports dart:mirrors
 const_evaluation_test: CompileTimeError
 deferred_constraints_constants_test: CompileTimeError
 enum_mirror_test: CompileTimeError
 field_increment_bailout_test: CompileTimeError
@@ skipping 20 matching lines @@
 deferred_global_test: Skip
 deferred_inheritance_constraints_test: Skip
 
 deopt_inlined_function_lazy_test: Pass, Crash # Incompatible flag: --deoptimize-alot
 tearoff_basic_test: RuntimeError, Crash # Conflicting flag.
 vm/type_cast_vm_test: RuntimeError # Line number mismatch.
 regress_23408_test: RuntimeError
 issue21159_test: Pass, Crash, Timeout # Issue 24659 - missing stack overflow check
 
 stack_trace_test: Fail  # Issue 24783 - inlined frames missing