Implement AstBuilder support for `void` keyword.

pkg/analyzer/test/generated/parser_fasta_test.dart

 // Copyright (c) 2017, 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.
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/generated/parser.dart' as analyzer;
 import 'package:front_end/src/fasta/analyzer/ast_builder.dart';
 import 'package:front_end/src/fasta/analyzer/element_store.dart';
@@ skipping 577 matching lines @@
   void
       test_parseCompilationUnitMember_function_generic_noReturnType_annotated() {
     // TODO(paulberry,ahe): Fasta doesn't appear to support annotated type
     // parameters.
     super
         .test_parseCompilationUnitMember_function_generic_noReturnType_annotated();
   }
 
   @override
   @failingTest
-  void test_parseCompilationUnitMember_function_generic_void() {
-    // TODO(paulberry): Unhandled event: VoidKeyword
-    super.test_parseCompilationUnitMember_function_generic_void();
-  }
-
-  @override
-  @failingTest
-  void test_parseCompilationUnitMember_function_void() {
-    // TODO(paulberry): Unhandled event: VoidKeyword
-    super.test_parseCompilationUnitMember_function_void();
-  }
-
-  @override
-  @failingTest
   void test_parseCompilationUnitMember_getter_external_noType() {
     // TODO(paulberry): Implement AstBuilder.handleModifier
     super.test_parseCompilationUnitMember_getter_external_noType();
   }
 
   @override
   @failingTest
   void test_parseCompilationUnitMember_getter_external_type() {
     // TODO(paulberry): Implement AstBuilder.handleModifier
     super.test_parseCompilationUnitMember_getter_external_type();
   }
 
   @override
   @failingTest
   void test_parseCompilationUnitMember_setter_external_noType() {
     // TODO(paulberry): Implement AstBuilder.handleModifier
     super.test_parseCompilationUnitMember_setter_external_noType();
   }
 
   @override
   @failingTest
   void test_parseCompilationUnitMember_setter_external_type() {
-    // TODO(paulberry): Unhandled event: VoidKeyword
+    // TODO(paulberry): Implement AstBuilder.handleModifier
     super.test_parseCompilationUnitMember_setter_external_type();
   }
 
   @override
   @failingTest
-  void test_parseCompilationUnitMember_setter_type() {
-    // TODO(paulberry): Unhandled event: VoidKeyword
-    super.test_parseCompilationUnitMember_setter_type();
-  }
-
-  @override
-  @failingTest
   void test_parseCompilationUnitMember_typeAlias_abstract() {
     // TODO(paulberry,ahe): Capture `=` token
     super.test_parseCompilationUnitMember_typeAlias_abstract();
   }
 
   @override
   @failingTest
   void test_parseCompilationUnitMember_typeAlias_generic() {
     // TODO(paulberry): Unhandled event: TypeArguments
     super.test_parseCompilationUnitMember_typeAlias_generic();
@@ skipping 185 matching lines @@
   @override
   @failingTest
   void test_parseTypeAlias_function_typeParameters() {
     // TODO(paulberry): Unhandled event: FunctionTypeAlias
     super.test_parseTypeAlias_function_typeParameters();
   }
 
   @override
   @failingTest
   void test_parseTypeAlias_function_voidReturnType() {
-    // TODO(paulberry): Unhandled event: VoidKeyword
+    // TODO(paulberry): Unhandled event: FunctionTypeAlias
     super.test_parseTypeAlias_function_voidReturnType();
   }
 
   @override
   @failingTest
   void test_parseTypeAlias_genericFunction_noParameters() {
     super.test_parseTypeAlias_genericFunction_noParameters();
   }
 
   @override
@@ skipping 57 matching lines @@
   void test_parseTypeAlias_genericFunction_typeParameters_voidReturnType() {
     super.test_parseTypeAlias_genericFunction_typeParameters_voidReturnType();
   }
 
   @override
   @failingTest
   void test_parseTypeAlias_genericFunction_voidReturnType() {
     super.test_parseTypeAlias_genericFunction_voidReturnType();
   }
 }