Implement dynamic function checks.

dart/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.
 
 [ $csp ]
 mirrors/delegate_test: RuntimeError # Issue 13864
 
 [ $compiler == dart2js ]
 async/schedule_microtask6_test: RuntimeError # global error handling is not supported. http://dartbug.com/5958
 
@@ skipping 112 matching lines @@
 async/catch_errors20_test: Fail # Timer interface not supported: dartbug.com/7728.
 async/catch_errors28_test: Fail # Timer interface not supported: dartbug.com/7728.
 async/catch_errors8_test: Fail # Timer interface not supported: dartbug.com/7728.
 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.
 
 [ $compiler == dart2js && $checked ]
 convert/utf85_test: Pass, Slow # Issue 12029.
 
+[ $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 == dart2dart ]
 mirrors/*: Skip # http://dartbug.com/11511
 async/schedule_microtask6_test: Fail             # Issue 10957 - may be related to issue 10910
 
 [ $compiler == dart2dart && $minified ]
 json/json_test: Fail                            # Issue 10961
@@ skipping 95 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.