Suppress regress_26031_test on Dartium (uses dart:io)

tests/standalone/standalone.status

 # Copyright (c) 2013, 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.
 
 # WARNING:
 # Tests using the multitest feature where failure is expected should *also* be
 # listed in tests/lib/analyzer/analyze_tests.status without the "standalone"
 # prefix.
 
 package/invalid_uri_test: Fail, OK # CompileTimeErrors intentionally
@@ skipping 51 matching lines @@
 full_coverage_test: Skip
 http_launch_test: Skip
 vmservice/*: SkipByDesign # Do not run standalone vm service tests in browser.
 issue14236_test: Skip # Issue 14236 Script snapshots do not work in the browser.
 oom_error_stacktrace_test: Skip
 out_of_memory_test: Skip
 map_insert_remove_oom_test: Skip  # Issue 24571
 verbose_gc_to_bmu_test: Skip
 precompilation_test: Skip # Standalone only test.
 precompilation_dart2js_test: Skip # Standalone only test.
+regress_26031_test: SkipByDesign # Standalone only test
 
 [ $compiler == dartanalyzer || $compiler == dart2analyzer ]
 issue14236_test: Skip # Analyzer can't handle Script snapshots.
 
 # test issue https://code.google.com/p/dart/issues/detail?id=11518
 io/file_constructor_test: fail
 
 # This is runtime test.
 io/process_exit_negative_test: Skip
 
@@ skipping 206 matching lines @@
 # Following tests are skipped on dart_product as package mapping is not supported.
 [ $runtime == dart_product ]
 package/scenarios/packages_file_strange_formatting/mixed_line_ends_test: Skip
 package/scenarios/packages_file_strange_formatting/empty_lines_test: Skip
 package/scenarios/invalid/invalid_utf8_test: Skip
 package/scenarios/invalid/same_package_twice_test: Skip
 package/scenarios/invalid/non_existent_packages_file_test: Skip
 package/scenarios/empty_packages_file/empty_packages_file_noimports_test: Skip
 package/scenarios/packages_option_only/packages_option_only_noimports_test: Skip
 package/scenarios/packages_option_only/packages_option_only_test: Skip