Use Feature directly in resolution.

pkg/compiler/lib/src/resolution/constructors.dart

 // Copyright (c) 2015, 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.
 
 library dart2js.resolution.constructors;
 
 import '../common.dart';
+import '../common/resolution.dart' show
+    Feature;
 import '../compiler.dart' show
     Compiler;
 import '../constants/constructors.dart' show
     GenerativeConstantConstructor,
     RedirectingGenerativeConstantConstructor;
 import '../constants/expressions.dart';
 import '../dart_types.dart';
 import '../elements/elements.dart';
 import '../elements/modelx.dart' show
     ConstructorElementX,
     ErroneousConstructorElementX,
     ErroneousElementX,
     ErroneousFieldElementX,
     FieldElementX,
     InitializingFormalElementX,
     ParameterElementX;
 import '../tree/tree.dart';
 import '../util/util.dart' show
     Link;
 import '../universe/call_structure.dart' show
     CallStructure;
-import '../universe/selector.dart' show
-    Selector;
 import '../universe/use.dart' show
     StaticUse;
 
 import 'members.dart' show
     lookupInScope,
     ResolverVisitor;
 import 'registry.dart' show
     ResolutionRegistry;
 import 'resolution_common.dart' show
     CommonResolverVisitor;
@@ skipping 439 matching lines @@
       Spannable diagnosticNode,
       ConstructorResultKind resultKind,
       DartType type,
       Element enclosing,
       String name,
       MessageKind kind,
       Map arguments,
       {bool isError: false,
        bool missingConstructor: false}) {
     if (missingConstructor) {
-      registry.registerThrowNoSuchMethod();
+      registry.registerFeature(Feature.THROW_NO_SUCH_METHOD);
     } else {
-      registry.registerThrowRuntimeError();
+      registry.registerFeature(Feature.THROW_RUNTIME_ERROR);
     }
     if (isError || inConstContext) {
       reporter.reportErrorMessage(
           diagnosticNode, kind, arguments);
     } else {
       reporter.reportWarningMessage(
           diagnosticNode, kind, arguments);
     }
     ErroneousElement error = new ErroneousConstructorElementX(
         kind, arguments, name, enclosing);
@@ skipping 24 matching lines @@
     } else if (inConstContext && !constructor.isConst) {
       reporter.reportErrorMessage(
           diagnosticNode, MessageKind.CONSTRUCTOR_IS_NOT_CONST);
       return new ConstructorResult(
           ConstructorResultKind.NON_CONSTANT, constructor, type);
     } else {
       if (constructor.isGenerativeConstructor) {
         if (cls.isAbstract) {
           reporter.reportWarningMessage(
               diagnosticNode, MessageKind.ABSTRACT_CLASS_INSTANTIATION);
-          registry.registerAbstractClassInstantiation();
+          registry.registerFeature(Feature.ABSTRACT_CLASS_INSTANTIATION);
           return new ConstructorResult(
               ConstructorResultKind.ABSTRACT, constructor, type);
         } else {
           return new ConstructorResult(
               ConstructorResultKind.GENERATIVE, constructor, type);
         }
       } else {
         assert(invariant(diagnosticNode, constructor.isFactoryConstructor,
             message: "Unexpected constructor $constructor."));
         return new ConstructorResult(
@@ skipping 142 matching lines @@
     }
   }
 
   ConstructorResult constructorResultForErroneous(
       Node node, Element error) {
     if (error is! ErroneousElementX) {
       // Parser error. The error has already been reported.
       error = new ErroneousConstructorElementX(
           MessageKind.NOT_A_TYPE, {'node': node},
           error.name, error);
-      registry.registerThrowRuntimeError();
+      registry.registerFeature(Feature.THROW_RUNTIME_ERROR);
     }
     return new ConstructorResult(
         ConstructorResultKind.INVALID_TYPE,
         error,
         new MalformedType(error, null));
   }
 
   ConstructorResult constructorResultForType(
       Node node,
       DartType type) {
@@ skipping 75 matching lines @@
     // constructors.
     return null;
   }
   // TODO(johnniwinther): Use [Name] for lookup.
   ConstructorElement constructor = cls.lookupConstructor(constructorName);
   if (constructor != null) {
     constructor = constructor.declaration;
   }
   return constructor;
 }