Update status file for libraries_specification_test

pkg/pkg.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.
 
 # Don't run any test-like files that show up in packages directories. It
 # shouldn't be necessary to run "pub install" in these packages, but if you do
 # it shouldn't break the tests.
 */packages/*/*: Skip
 */*/packages/*/*: Skip
 */*/*/packages/*/*: Skip
@@ skipping 143 matching lines @@
 front_end/test/*: RuntimeError, OK, Pass # Issue 26103. Timers are not supported.
 kernel/test/*: RuntimeError, OK # Issue 26103. Timers are not supported.
 
 [ $compiler == dart2js && $runtime == d8 ]
 front_end/test/precedence_info_test: RuntimeError # Issue 30279.
 front_end/test/scanner_fasta_test: RuntimeError # Issue 30279.
 front_end/test/scanner_replacement_test: RuntimeError # Issue 30279.
 front_end/test/scanner_test: RuntimeError # Issue 30279.
 front_end/test/src/async_dependency_walker_test: RuntimeError # Issue 30279.
 front_end/test/src/base/flat_buffers_test: RuntimeError # Issue 30279.
+front_end/test/src/base/libraries_specification_test: RuntimeError # Issue 30279.
 front_end/test/src/base/uri_resolver_test: RuntimeError # Issue 30279.
 front_end/test/src/dependency_walker_test: RuntimeError # Issue 30279.
 front_end/test/src/incremental/byte_store_test: RuntimeError # Issue 30279.
 front_end/test/src/incremental/format_test: RuntimeError # Issue 30279.
 front_end/test/src/multi_root_file_system_test: RuntimeError # Issue 30279.
 front_end/test/token_test: RuntimeError # Issue 30279.
 lookup_map/test/lookup_map_test: RuntimeError # Issue 30279.
 
 [ $compiler == dart2js && $runtime == drt ]
 async/test/stream_zip_test: RuntimeError, Pass # Issue 18548
@@ skipping 61 matching lines @@
 analyzer_cli/test/driver_test: Pass, Slow, Timeout
 
 [ $runtime == vm && $system == windows ]
 analyzer/test/src/task/strong/checker_test: Pass, Slow
 
 [ $browser ]
 testing/test/analyze_test: SkipByDesign
 
 [ $browser || $runtime == flutter ]
 status_file/*: SkipByDesign # Only meant to run on the standalone VM.