It's alive (first kernel inference test)

pkg/compiler/lib/src/kernel/element_map.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:kernel/ast.dart' as ir;
 
 import '../closure.dart';
 import '../common.dart';
 import '../constants/values.dart';
 import '../common_elements.dart';
@@ skipping 168 matching lines @@
 
   /// Returns the [LibraryEntity] corresponding to the library [node].
   LibraryEntity getLibrary(ir.Library node);
 
   /// Returns the [js.Template] for the `JsBuiltin` [constant] value.
   js.Template getJsBuiltinTemplate(
       ConstantValue constant, CodeEmitterTask emitter);
 
   /// Return the [ConstantValue] the initial value of [field] or `null` if
   /// the initializer is not a constant expression.
-  ConstantValue getFieldConstantValue(ir.Field field);
+  ConstantValue getFieldConstantValue(FieldEntity field);
 
   /// Returns the `noSuchMethod` [FunctionEntity] call from a
   /// `super.noSuchMethod` invocation within [cls].
   FunctionEntity getSuperNoSuchMethod(ClassEntity cls);
 
   /// Returns a [Spannable] for a message pointing to the IR [node] in the
   /// context of [member].
   Spannable getSpannable(MemberEntity member, ir.Node node);
 
   /// Returns the constructor body entity corresponding to [constructor].
@@ skipping 263 matching lines @@
       uri = Uri.parse(node.location.file);
       break;
     }
     node = node.parent;
   }
   if (uri != null) {
     return new SourceSpan(uri, offset, offset + 1);
   }
   return null;
 }