Issue 3530. Import elements into separate import namespace

tests/language/language.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.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 # In order to maintain maximum test coverage for all builds,
 # please use the following procedure to mark a test
 # failed on architectures other than the one you are working on.
@@ skipping 72 matching lines @@
 disable_privacy_test: Skip  # Issue 1882: Needs --disable_privacy support.
 duplicate_implements_test: Skip # Issue 976
 factory5_test/00: Fail # issue 3079
 field3a_negative_test: Fail
 field_method4_negative_test: Fail
 final_syntax_test/*: Skip  # can't handle base case
 function_type_alias_negative_test: Fail  # Bug 5231617.
 generic_parameterized_extends_test: Skip  # Bug 5392297
 instance_call_wrong_argument_count_negative_test: Fail
 instanceof3_test: Fail # Issue 2571
+library2_negative_test: Fail # test issue 3649
 library4_negative_test: Fail   # Bug 5406175
+library6_negative_test: Fail # test issue 3650
 list_literal4_test: Fail       # Issue 1343
 map_literal4_test: Fail        # Issue 1343
 named_parameters_negative_test: Fail
 named_parameters_with_object_property_names_test: Fail # Issue 2137
 no_such_method_negative_test: Fail
 override_field_test/04: Fail             # Bug 5215249
 private_factory_resolution_negative_test: Fail # Issue 2275
 private_member3_negative_test: Fail       # Issue 2383
 pseudo_kw_illegal_test/08: Fail # Issue 356
 pseudo_kw_illegal_test/10: Fail # Issue 356
@@ skipping 322 matching lines @@
 prefix_core_test: Fail # Issue 2264.
 
 [ $compiler == frog && $runtime == none ]
 *: Skip
 
 [ $arch == simarm ]
 *: Skip
 
 [ $arch == arm ]
 *: Skip