Support enabling of type inference with useKernel

tests/compiler/dart2js/jumps/jump_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 'dart:io';
 import 'package:async_helper/async_helper.dart';
+import 'package:compiler/src/commandline_options.dart';
 import 'package:compiler/src/common.dart';
 import 'package:compiler/src/compiler.dart';
 import 'package:compiler/src/diagnostics/diagnostic_listener.dart';
 import 'package:compiler/src/elements/elements.dart';
 import 'package:compiler/src/elements/entities.dart';
 import 'package:compiler/src/elements/jumps.dart';
 import 'package:compiler/src/js_model/locals.dart';
 import 'package:compiler/src/kernel/element_map.dart';
 import 'package:compiler/src/kernel/kernel_backend_strategy.dart';
 import 'package:compiler/src/tree/nodes.dart' as ast;
 import '../equivalence/id_equivalence.dart';
 import '../equivalence/id_equivalence_helper.dart';
 import 'package:kernel/ast.dart' as ir;
 
 main() {
   asyncTest(() async {
     Directory dataDir = new Directory.fromUri(Platform.script.resolve('data'));
-    await checkTests(dataDir, computeJumpsData, computeKernelJumpsData);
+    await checkTests(dataDir, computeJumpsData, computeKernelJumpsData,
+        options: [Flags.disableTypeInference]);
   });
 }
 
 /// Compute closure data mapping for [_member] as a [MemberElement].
 ///
 /// Fills [actualMap] with the data and [sourceSpanMap] with the source spans
 /// for the data origin.
 void computeJumpsData(
     Compiler compiler, MemberEntity _member, Map<Id, ActualData> actualMap,
     {bool verbose: false}) {
@@ skipping 168 matching lines @@
 
   visitBreakStatement(ir.BreakStatement node) {
     JumpTarget target = _localsMap.getJumpTargetForBreak(node);
     assert(target != null, 'No target for $node.');
     NodeId id = computeGotoNodeId(node);
     SourceSpan sourceSpan = computeSourceSpan(node);
     gotos.add(new GotoData(id, sourceSpan, target));
     super.visitBreakStatement(node);
   }
 }