Remove StatementType

pkg/compiler/lib/src/ssa/graph_builder.dart

 // 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.
 
 import '../closure.dart';
 import '../common.dart';
 import '../common/codegen.dart' show CodegenRegistry;
 import '../compiler.dart';
 import '../constants/constant_system.dart';
 import '../dart_types.dart';
@@ skipping 290 matching lines @@
 
     ClassElement cls = builder.backend.helpers.RuntimeFunctionType;
     builder.push(
         new HFunctionType(inputs, type, new TypeMask.exact(cls, closedWorld)));
   }
 
   void visitMalformedType(MalformedType type, GraphBuilder builder) {
     visitDynamicType(const DynamicType(), builder);
   }
 
-  void visitStatementType(StatementType type, GraphBuilder builder) {
-    throw 'not implemented visitStatementType($type)';
-  }
-
   void visitInterfaceType(InterfaceType type, GraphBuilder builder) {
     List<HInstruction> inputs = <HInstruction>[];
     for (DartType typeArgument in type.typeArguments) {
       typeArgument.accept(this, builder);
       inputs.add(builder.pop());
     }
     ClassElement cls;
     if (type.typeArguments.isEmpty) {
       cls = builder.backend.helpers.RuntimeTypePlain;
     } else {
       cls = builder.backend.helpers.RuntimeTypeGeneric;
     }
     builder.push(
         new HInterfaceType(inputs, type, new TypeMask.exact(cls, closedWorld)));
   }
 
   void visitTypedefType(TypedefType type, GraphBuilder builder) {
     DartType unaliased = type.unaliased;
     if (unaliased is TypedefType) throw 'unable to unalias $type';
     unaliased.accept(this, builder);
   }
 
   void visitDynamicType(DynamicType type, GraphBuilder builder) {
     JavaScriptBackend backend = builder.compiler.backend;
     ClassElement cls = backend.helpers.DynamicRuntimeType;
     builder.push(new HDynamicType(type, new TypeMask.exact(cls, closedWorld)));
   }
 }