Stop making classes implicitly abstract

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 88 matching lines @@
 compile_time_constant_checked3_test/06: Fail, OK
 
 [ $compiler == dartc ]
 metadata_test: Fail
 bad_constructor_test/04: Fail # Constructor name clashes with other member
 bad_constructor_test/05: Fail # Constructor name clashes with other member
 bad_constructor_test/06: Fail # Constructor name clashes with other member
 call_constructor_on_unresolvable_class_test/03: Fail, OK # 'library' cannot be used as a prefix because it is a built-in identifier
 get_set_syntax_test/none: Fail # does not accept getter/setter with no method body
 application_negative_test: Fail # Runtime only test, rewrite as multitest
-interface_negative_test: Fail # instantiation of abstract class
 argument_definition_test/01: Fail # Issue 5082
 argument_definition_test/02: Fail # Issue 5082
 argument_definition_test/03: Fail # Issue 5082
 argument_definition_test/04: Fail # Issue 5082
 argument_definition_test/05: Fail # Issue 5082
 assert_keyword_negative_test: Fail # Runtime only test, rewrite as multitest
 assign_instance_method_negative_test: Fail # Runtime only test, rewrite as multitest
 body_less_constructor_wrong_arg_negative_test: Fail # Runtime only test, rewrite as multitest
 call_nonexistent_static_test/03: Fail # Unresolved static calls are no longer errors.
 call_nonexistent_static_test/04: Fail # Unresolved static calls are no longer errors.
@@ skipping 141 matching lines @@
 
 [ $compiler == dart2dart ]
 getter_no_setter2_test/01: Fail, Pass # Test works only for minified output.
 metadata_test: Fail
 prefix_new_test: Fail
 # Fails in conservative mode, issue 4935, passes in minifinying mode.
 assert_lexical_scope_test: Fail, Pass
 bad_constructor_test/04: Fail
 bad_constructor_test/05: Fail
 bad_constructor_test/06: Fail
-interface_negative_test: Fail
-abstract_factory_constructor_test/00: Fail
 interface_test/00: Fail
 argument_definition_test/*: Skip # Not implemented.
 argument_definition2_test: Skip # Not implemented. Fails in minified tests.
 call_constructor_on_unresolvable_class_test/01: Fail # generates 'new Unresolved()' which fails on the VM
 call_constructor_on_unresolvable_class_test/02: Fail # generates 'new Unresolved()' which fails on the VM
 call_constructor_on_unresolvable_class_test/03: Fail # generates 'new Unresolved()' which fails on the VM
 call_constructor_on_unresolvable_class_test/07: Fail # generates 'new Unresolved()' which fails on the VM
 call_nonexistent_constructor_test: Fail # Issue 1031
 const_var_test: Fail # Map literals take 2 type arguments.
 map_literal3_test: Fail # Map literals take 2 type arguments.
@@ skipping 97 matching lines @@
 get_set_syntax_test/05: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/06: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/07: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/08: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/09: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/10: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/11: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/13: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/14: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
 get_set_syntax_test/15: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
-get_set_syntax_test/16: Fail # Fixed by https://chromiumcodereview.appspot.com/10915111
+
 
 # Only checked mode reports an error on type assignment
 # problems in compile time constants.
 compile_time_constant_checked_test/02: Fail, OK
 compile_time_constant_checked2_test/01: Fail, OK
 compile_time_constant_checked2_test/02: Fail, OK
 compile_time_constant_checked2_test/03: Fail, OK
 compile_time_constant_checked2_test/04: Fail, OK
 compile_time_constant_checked2_test/05: Fail, OK
 compile_time_constant_checked2_test/06: Fail, OK
 compile_time_constant_checked3_test/01: Fail, OK
 compile_time_constant_checked3_test/02: Fail, OK
 compile_time_constant_checked3_test/03: Fail, OK
 compile_time_constant_checked3_test/04: Fail, OK
 compile_time_constant_checked3_test/05: Fail, OK
 compile_time_constant_checked3_test/06: Fail, OK