Make sure setter does not conflict with method

tests/language/language_dart2js.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.
 
 [ $compiler == dart2js || $compiler == dart2dart ]
 class_literal_test/01: Fail # Class literals are expression now; delete this test.
 class_literal_test/02: Fail # Class literals are expression now; delete this test.
 class_literal_test/05: Fail # Class literals are expression now; delete this test.
 class_literal_test/06: Fail # Class literals are expression now; delete this test.
 class_literal_test/07: Fail # Class literals are expression now; delete this test.
@@ skipping 208 matching lines @@
 list_literal4_test: Fail # Illegal argument(s): 0 -- checked mode test.
 map_literal4_test: Fail # Attempt to modify an immutable object -- checked mode test.
 named_parameters_type_test: Fail # Expect.equals(expected: <111>, actual: <0>) fails. -- checked mode test.
 type_checks_in_factory_method_test: Fail # Expect.equals(expected: <true>, actual: <false>) fails. -- checked mode test.
 type_dartc_test: Fail # Expect.equals(expected: <1>, actual: <0>) -- checked mode test.
 
 class_cycle_negative_test: Fail, OK # Bad test: assumes eager loading.
 external_test/16: Fail, OK # Bad test: assumes eager loading.
 field1_negative_test: Fail, OK # Bad test: assumes eager loading.
 field6_negative_test: Fail, OK # Bad test: assumes eager loading.
-field7_negative_test: Fail, OK # Bad test: assumes eager loading.
 interface_cycle_negative_test: Fail, OK # Bad test: assumes eager loading.
 syntax_test/47: Fail, OK # Bad test: assumes eager loading.
 
 
 #
 # The following tests are all negative tests that should be fixed.
 #
 abstract_static_negative_test: Fail # Negative language test.
 abstract_syntax_test/01: Fail # Negative language test.
 abstract_syntax_test/02: Fail # Negative language test.
@@ skipping 121 matching lines @@
 [ $runtime == opera ]
 call_through_null_getter_test: Fail
 closure3_test: Fail
 execute_finally3_test: Fail
 method_invocation_test: Fail
 null_pointer_exception_test: Fail
 stack_overflow_test: Fail
 string_interpolate_npe_test: Fail
 closure_call_wrong_argument_count_negative_test: Skip
 label_test: Skip