Remove suppression for lib/async/stream_transform_test checked mode on d8

tests/lib/lib.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.
 
 [ $checked && $compiler != dartanalyzer && $compiler != dart2analyzer && $runtime != dartium ]
 mirrors/regress_16321_test/01: CompileTimeError # Issue 16351
 
 [ $checked && $compiler == none && ($runtime == dartium || $runtime == drt) ]
 mirrors/regress_16321_test/01: RunTimeError # Issue 16351
 
@@ skipping 146 matching lines @@
 async/run_zoned8_test: Fail # Timer interface not supported: dartbug.com/7728.
 async/zone_bind_test: Fail # Timer interface not supported: dartbug.com/7728.
 async/future_timeout_test: Fail # Timer interface not supported: dartbug.com/7728.
 async/stream_timeout_test: Fail # Timer interface not supported: dartbug.com/7728.
 async/stream_asyncexpand_test: RuntimeError # Timer interface not supported: dartbug.com/7728.
 async/stream_asyncmap_test: RuntimeError # Timer interface not supported: dartbug.com/7728.
 
 [ $compiler == dart2js && $checked ]
 convert/utf85_test: Pass, Slow # Issue 12029.
 
-[ $compiler == dart2js && $checked && $runtime == d8 ]
-async/stream_transform_test: Fail # https://code.google.com/p/v8/issues/detail?id=3084
-
 [ $compiler == dart2js ]
 convert/chunked_conversion_utf88_test: Slow, Pass
 convert/utf85_test: Slow, Pass
 
 
 [ $compiler == dart2js && $browser ]
 async/timer_not_available_test: Fail, OK # only meant to test when there is no way to
                                          # implement timer (currently only in d8)
 
 [ $compiler == dart2js && $minified ]
@@ skipping 108 matching lines @@
 
 mirrors/redirecting_factory_test/01: StaticWarning # test issue X, The return type 'Class<T2, T1>' of the redirected constructor is not assignable to 'Class<T1, T2>'
 mirrors/redirecting_factory_test/none: StaticWarning # test issue X, The return type 'Class<T2, T1>' of the redirected constructor is not assignable to 'Class<T1, T2>
 
 mirrors/fake_function_without_call_test: StaticWarning, OK # Implements Function without defining call.
 mirrors/find_in_context_fake_function_test: StaticWarning, OK # Implements Function without defining call.
 mirrors/immutable_collections_test: StaticWarning, OK # Expect failure for any type of Iterable.
 mirrors/inference_and_no_such_method_test: StaticWarning, OK # Expect to trigger noSuchMethod.
 mirrors/repeated_private_anon_mixin_app_test: StaticWarning, OK # Intentional library name conflict.
 mirrors/removed_api_test: StaticWarning, OK # Deliberately refers to undeclared members.