Support BottomType in the VM Kernel reader

runtime/vm/kernel.cc

 // 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.
 
 #include "vm/kernel.h"
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 namespace dart {
 
 namespace kernel {
@@ skipping 1150 matching lines @@
 
 
 void VoidType::AcceptDartTypeVisitor(DartTypeVisitor* visitor) {
   visitor->VisitVoidType(this);
 }
 
 
 void VoidType::VisitChildren(Visitor* visitor) {}
 
 
+BottomType::~BottomType() {}
+
+
+void BottomType::AcceptDartTypeVisitor(DartTypeVisitor* visitor) {
+  visitor->VisitBottomType(this);
+}
+
+
+void BottomType::VisitChildren(Visitor* visitor) {}
+
+
 InterfaceType::~InterfaceType() {}
 
 
 void InterfaceType::AcceptDartTypeVisitor(DartTypeVisitor* visitor) {
   visitor->VisitInterfaceType(this);
 }
 
 
 void InterfaceType::VisitChildren(Visitor* visitor) {
   VisitList(&type_arguments(), visitor);
@@ skipping 83 matching lines @@
 
 void Program::VisitChildren(Visitor* visitor) {
   VisitList(&libraries(), visitor);
 }
 
 
 }  // namespace kernel
 
 }  // namespace dart
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)