dart2js should skip tests requiring more than 53-bit precision.

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 95 matching lines @@
 float_array_test: Skip # dart:typed_data support needed.
 int_array_test: Skip  # dart:typed_data support needed.
 io/web_socket_protocol_processor_test: Skip  # Importing code with external keyword
 int_array_load_elimination_test: Skip  # This is a VM test
 medium_integer_test: Fail, OK # Test fails with JS number semantics: issue 1533.
 io/process_exit_negative_test: Fail, OK # relies on a static error that is a warning now.
 package/package_isolate_test: Skip # spawnUri does not work in dart2js. See issue 3051
 debugger/*: Skip # Do not run standalone vm debugger tests with dart2js.
 left_shift_bit_and_op_test: Skip # Integers exceed dart2js precision.
 pow_test: Skip # Precision > 53 bits.
+double_smi_comparison_test: Skip # Precision > 53 bits.
 http_launch_test: Skip
 53bit_overflow_test: Skip
 53bit_overflow_literal_test: Skip
 oom_error_stacktrace_test: Fail, OK # (OOM on JS may produce a stacktrace).
 vmservice/*: Skip # Do not run standalone vm service tests with dart2js.
 
 
 [ $compiler == dart2js && $jscl ]
 assert_test: Fail, OK # Assumes unspecified fields on the AssertionError.
 byte_array_test: Fail, OK # ByteArray
@@ skipping 25 matching lines @@
 io/web_socket_ping_test: Skip # TODO(ajohnsen): Timeout issue
 
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 io/file_fuzz_test: Pass, Timeout
 out_of_memory_test: Skip # passes on Mac, crashes on Linux
 oom_error_stacktrace_test: Skip # Fails on Linux
 io/web_socket_ping_test: Skip # TODO(ajohnsen): Timeout issue