Improve parsing of async and generator methods.

tests/co19/co19-runtime.status

Index: tests/co19/co19-runtime.status
diff --git a/tests/co19/co19-runtime.status b/tests/co19/co19-runtime.status
index 0444d35dbfff74b4848a9ec2f9d6596ad2460a9a..009aa3311ad8fd412e5ed3a3d0f377ce251ef378 100644
--- a/tests/co19/co19-runtime.status
+++ b/tests/co19/co19-runtime.status
@@ -87,18 +87,25 @@ LibTest/isolate/Isolate/spawn_A02_t01: Skip # co19 issue 667
 LibTest/html/*: SkipByDesign # dart:html not supported on VM.
 LayoutTests/fast/*: SkipByDesign # DOM not supported on VM.
 WebPlatformTest/*: SkipByDesign # dart:html not supported on VM.
-
-[ ($runtime == vm || $runtime == dart_precompiled) && $mode == debug && $builder_tag == asan ]
-Language/Types/Interface_Types/subtype_t27: Skip  # Issue 21174.
-
-[ ($runtime == vm || $runtime == dart_precompiled) && $compiler != dartk && $compiler != dartkp ]
-# co19 update Sep 29, 2015 (3ed795ea02e022ef19c77cf1b6095b7c8f5584d0)
+Language/Expressions/Function_Invocation/async_generator_invokation_t08: Fail # Issue 25967
+Language/Expressions/Function_Invocation/async_generator_invokation_t10: Fail # Issue 25967
+Language/Statements/Yield_and_Yield_Each/Yield_Each/execution_async_t08: RuntimeError # Issue 25748
+Language/Statements/Yield_and_Yield_Each/Yield_Each/execution_async_t09: RuntimeError # Issue 25748
+Language/Statements/Yield_and_Yield_Each/Yield_Each/execution_async_t10: RuntimeError # Issue 25748
+Language/Statements/Yield_and_Yield_Each/Yield_Each/execution_sync_t05: RuntimeError # Issue 25662,25634
 Language/Classes/Getters/type_object_t01: RuntimeError # Issue 23721
 Language/Classes/Getters/type_object_t02: RuntimeError # Issue 23721
 Language/Classes/Setters/type_object_t01: RuntimeError # Issue 23721
 Language/Classes/Setters/type_object_t02: RuntimeError # Issue 23721
 Language/Classes/Static_Methods/type_object_t01: RuntimeError # Issue 23721
 Language/Classes/Static_Methods/type_object_t02: RuntimeError # Issue 23721
+Language/Expressions/Assignment/super_assignment_failed_t05: RuntimeError # Issue 25671
+
+[ ($runtime == vm || $runtime == dart_precompiled) && $mode == debug && $builder_tag == asan ]
+Language/Types/Interface_Types/subtype_t27: Skip  # Issue 21174.
+
+[ ($runtime == vm || $runtime == dart_precompiled) && $compiler != dartk && $compiler != dartkp ]
+# co19 update Sep 29, 2015 (3ed795ea02e022ef19c77cf1b6095b7c8f5584d0)
 Language/Expressions/Identifier_Reference/built_in_identifier_t35: MissingCompileTimeError # Issue 25732
 Language/Expressions/Identifier_Reference/built_in_identifier_t36: MissingCompileTimeError # Issue 25732
 Language/Expressions/Identifier_Reference/built_in_identifier_t37: MissingCompileTimeError # Issue 25732
@@ -122,9 +129,6 @@ Language/Expressions/Identifier_Reference/built_in_not_dynamic_t14: MissingCompi
 Language/Expressions/Identifier_Reference/built_in_not_dynamic_t19: MissingCompileTimeError # Issue 25772
 Language/Expressions/Method_Invocation/Ordinary_Invocation/object_method_invocation_t01: MissingCompileTimeError # Issue 25496
 Language/Expressions/Method_Invocation/Ordinary_Invocation/object_method_invocation_t02: MissingCompileTimeError # Issue 25496
-Language/Expressions/Assignment/super_assignment_failed_t05: RuntimeError # Issue 25671
-Language/Expressions/Function_Invocation/async_generator_invokation_t08: Fail # Issue 25967
-Language/Expressions/Function_Invocation/async_generator_invokation_t10: Fail # Issue 25967
 Language/Expressions/Property_Extraction/Getter_Access_and_Method_Extraction/class_object_member_t01: MissingCompileTimeError # Issue 24332
 Language/Expressions/Property_Extraction/Getter_Access_and_Method_Extraction/class_object_member_t02: MissingCompileTimeError # Issue 24332
 Language/Expressions/Property_Extraction/Getter_Access_and_Method_Extraction/class_object_member_t03: MissingCompileTimeError # Issue 24332
@@ -136,10 +140,6 @@ Language/Expressions/Property_Extraction/Getter_Access_and_Method_Extraction/cla
 Language/Mixins/Mixin_Application/syntax_t16: CompileTimeError # Issue 25765
 Language/Mixins/declaring_constructor_t05: MissingCompileTimeError # Issue 24767
 Language/Mixins/declaring_constructor_t06: MissingCompileTimeError # Issue 24767
-Language/Statements/Yield_and_Yield_Each/Yield_Each/execution_async_t08: RuntimeError # Issue 25748
-Language/Statements/Yield_and_Yield_Each/Yield_Each/execution_async_t09: RuntimeError # Issue 25748
-Language/Statements/Yield_and_Yield_Each/Yield_Each/execution_async_t10: RuntimeError # Issue 25748
-Language/Statements/Yield_and_Yield_Each/Yield_Each/execution_sync_t05: RuntimeError # Issue 25662,25634
 Language/Statements/Yield_and_Yield_Each/Yield_Each/location_t01: MissingCompileTimeError # Issue 25495
 Language/Statements/Yield_and_Yield_Each/Yield_Each/location_t03: MissingCompileTimeError # Issue 25495
 Language/Statements/Yield_and_Yield_Each/Yield_Each/location_t05: MissingCompileTimeError # Issue 25495