Add test precompiling dart2js.

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 44 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.
 javascript_compatibility_errors_test: Skip
 javascript_compatibility_warnings_test: Skip
 oom_error_stacktrace_test: Skip
 out_of_memory_test: Skip
 verbose_gc_to_bmu_test: Skip
 precompilation_test: Skip # Standalone only test.
+precompilation_dart2js_test: Skip # Standalone only test.
 noopt_test: Skip # Standalone only test.
 
 [ $compiler == dartanalyzer || $compiler == dart2analyzer ]
 javascript_int_overflow_literal_test/01: Fail, OK
 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.
@@ skipping 24 matching lines @@
 javascript_int_overflow_test: Skip
 javascript_int_overflow_literal_test: Skip
 oom_error_stacktrace_test: RuntimeError, OK # (OOM on JS may produce a stacktrace).
 vmservice/*: Skip # Do not run standalone vm service tests with dart2js.
 issue14236_test: Skip # dart2js does not deal with Script snapshots.
 javascript_compatibility_errors_test: Skip
 javascript_compatibility_warnings_test: Skip
 unboxed_int_converter_test: Skip
 pair_location_remapping_test: Skip
 precompilation_test: Skip # Standalone only test.
+precompilation_dart2js_test: Skip # Standalone only test.
 noopt_test: Skip # Standalone only test.
 
 [ $runtime == vm && $arch == ia32]
 precompilation_test: Skip # Not expected to pass on ia32.
+precompilation_dart2js_test: Skip # Not expected to pass on ia32.
 noopt_test: Skip # Not expected to pass on ia32.
 
 [ $runtime == vm && $arch == arm]
 precompilation_test: Skip # Issue 24427
+precompilation_dart2js_test: Skip # Issue 24427
 
 [ $compiler == dart2js && $jscl ]
 assert_test: RuntimeError, OK # Assumes unspecified fields on the AssertionError.
 deoptimization_test: RuntimeError, OK # Requires bigint.
 out_of_memory_test: RuntimeError, OK # d8 handles much larger arrays than Dart VM.
 io/arguments_test: CompileTimeError, OK # Cannot pass arguments to d8.
 
 [ $compiler == dart2js && $runtime == none ]
 io/arguments_test: Fail # DartOptions not supported by dart2js, and issue 14200.
 medium_integer_test: Pass # The test only fails at runtime, not at compilation.
@@ skipping 79 matching lines @@
 [ $runtime == vm ]
 # Failures in secure networking while NSS is replaced with BoringSSL
 io/https_client_certificate_test: RuntimeError # Issue 24070
 io/secure_socket_renegotiate_test: RuntimeError
 io/secure_socket_bad_data_test: RuntimeError  # An error in a secure connection just puts a READ_CLOSED on the stream, rather than signaling an error on the stream.
 
 [ $noopt ]
 map_literal_oom_test: Pass, Crash # Issue 24678
 javascript*: SkipByDesign # JS overflow flag unsupported
 io/web_socket_test: Pass, RuntimeError # Issue 24674