fix #27971, implement generic function RTTI

pkg/dev_compiler/test/browser/language_tests.js

 // Copyright (c) 2015, 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.
 
 define(['dart_sdk', 'async_helper', 'expect', 'unittest', 'is', 'require'],
       function(dart_sdk, async_helper, expect, unittest, is, require) {
   'use strict';
 
   async_helper = async_helper.async_helper;
   let minitest = expect.minitest;
@@ skipping 177 matching lines @@
       'function_type_alias3_test': fail,
       'function_type_alias4_test': fail,
       'function_type_alias6_test_none_multi': fail,
       'generic_instanceof_test': fail, // runtime strong mode reject
       'generic_instanceof2_test': fail,
       'generic_is_check_test': fail,
       'generic_methods_dynamic_test_02_multi': fail,
       'generic_methods_dynamic_test_04_multi': fail,
       'generic_methods_recursive_bound_test_03_multi': fail,
       'generic_methods_simple_as_expression_test_02_multi': fail,
+
+      'generic_methods_generic_class_tearoff_test': fail, // Strong mode is-check failure
+      'generic_methods_tearoff_specialization_test': fail, // Strong mode is-check failure
+      'generic_methods_named_parameters_test': fail, // Strong mode is-check failure
+      'generic_methods_optional_parameters_test': fail, // Strong mode is-check failure
+
       'getter_closure_execution_order_test': fail,
       'gc_test': 'slow',
       'identical_closure2_test': fail,
       'infinite_switch_label_test': fail,
       'infinity_test': fail,
       'initializing_formal_final_test': fail,
       'instance_creation_in_function_annotation_test': fail,
       'instanceof2_test': fail,
       'instanceof4_test_01_multi': fail,
       'instanceof4_test_none_multi': fail,
@@ skipping 754 matching lines @@
 
     for (let action of unittest_tests) {
       try {
         action();
       } catch (e) {
         console.error("Caught error tying to setup test:", e);
       }
     }
   });
 });