Migrate block 163 to Dart 2.0.

tests/language_strong/language_strong.status

 # Copyright (c) 2016, 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.
 
 # Skip entire suite if not running in strong mode.
 [ ! $strong ]
 *: SkipByDesign
 
 # Skip tests that are not yet strong-mode clean.
 [ $strong ]
@@ skipping 572 matching lines @@
 type_promotion_multiple_test: Skip
 type_promotion_parameter_test: Skip
 type_variable_bounds2_test: Skip
 type_variable_bounds3_test: Skip
 type_variable_bounds4_test: Skip
 type_variable_bounds_test: Skip
 type_variable_conflict2_test: Skip
 type_variable_conflict_test: Skip
 type_variable_function_type_test: Skip
 type_variable_identifier_expression_test: Skip
-type_variable_scope2_test: Skip
-type_variable_scope3_test: Skip
-type_variable_scope_test: Skip
-type_variable_static_context_negative_test: Skip
-typed_selector2_test: Skip
-unary_plus_negative_test: Skip
-unbalanced_brace_test: Skip
-unbound_getter_test: Skip
-unhandled_exception_negative_test: Skip
-unresolved_default_constructor_test: Skip
-unresolved_in_factory_negative_test: Skip
-unresolved_top_level_method_negative_test: Skip
-unresolved_top_level_var_negative_test: Skip
-unsigned_right_shift_test: Skip
-unsupported_operators_test: Skip
-variable_declaration_metadata_test: Skip
 void_type_test: Skip
 wrong_number_type_arguments_test: Skip
 
 [ $compiler == dart2analyzer && $strong ]
 # async_await_test/02: CompileTimeError # Issue 28823
 # async_await_test/03: CompileTimeError # Issue 28823
 # async_await_test/none: CompileTimeError # Issue 28823
 # async_star_test/01: CompileTimeError # Issue 28823
 # async_star_test/02: CompileTimeError # Issue 28823
 # async_star_test/03: CompileTimeError # Issue 28823
@@ skipping 105 matching lines @@
 regress_16640_test: RuntimeError # Issue 29920
 regress_22443_test: RuntimeError # Issue 29920
 stack_overflow_stacktrace_test: RuntimeError # Issue 29920
 stack_overflow_test: RuntimeError # Issue 29920
 stacktrace_test: RuntimeError # Issue 29920
 switch_label2_test: RuntimeError # Issue 29920
 switch_label_test: RuntimeError # Issue 29920
 switch_try_catch_test: RuntimeError # Issue 29920
 throwing_lazy_variable_test: RuntimeError # Issue 29920
 truncdiv_test: RuntimeError # Issue 29920
-type_variable_nested_test: RuntimeError # Issue 29920
 
 # This test does not generate the expected compile time error, but it also does
 # not behave correctly at runtime. We cannot record this as "Fail" without
 # confusing the DDC travis bot (as "Fail" is normally used for compile time
 # failures of _negative_tests). Remove "Skip" once we have the DDC travis bot
 # running on test.dart, OR when we fix dartanalyzer/dartdevc CommandOutput
 # classes to invert negative test status in the same way our other tools do.
 prefix10_negative_test: Skip # Issue 29920
 
 [ $compiler == dartdevc && $system == windows ]
 multiline_strings_test: RuntimeError # Issue 30336
 raw_string_test: RuntimeError # Issue 30336