Update status file

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 # Fails intentionally
@@ skipping 32 matching lines @@
 # that are running an earlier version of MacOS. The issue is that the
 # old version of MacOS does not expand the precomposed utf-8 it gets
 # from the VM before comparing it to the decomposed utf-8 used for the
 # file system.
 io/file_non_ascii_sync_test: Pass, Fail
 io/file_non_ascii_test: Pass, Fail
 io/directory_non_ascii_sync_test: Pass, Fail
 io/directory_non_ascii_test: Pass, Fail
 io/process_non_ascii_test: Pass, Fail
 
-[ $runtime == vm && $mode == debug && $checked ]
-io/http_client_request_test: Pass, Crash  # Issue 11278
-io/http_server_response_test: Pass, Crash  # Issue 11278
-io/http_content_length_test: Pass, Crash  # Issue 11278
-
 [ $compiler == none && $runtime == drt ]
 typed_data_isolate_test: Skip # This test uses dart:io
 io/*: Skip # Don't run tests using dart:io in the browser
 package/*: Skip # Do not run those in Dartium.
 debugger/*: Skip # Do not run standalone debugger tests in browser.
 coverage_test: Skip
 http_launch_test: Skip
 
 [ $compiler == dartc ]
 
@@ skipping 104 matching lines @@
 out_of_memory_test: Pass, Crash # Issue: 11207 (Pass on Mac)
 typed_data_test: Timeout, Crash # Issue: 11207
 typed_data_isolate_test: Pass, Crash # Issue: 11207
 io/*: Skip # Skip IO tests for now as they are still quite flaky.
 
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 *: Skip