Implement type variables in mixin applications.

pkg/front_end/lib/src/fasta/kernel/kernel_library_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.
 
 library fasta.kernel_library_builder;
 
 import 'package:kernel/ast.dart';
 
 import 'package:kernel/clone.dart' show
     CloneVisitor;
@@ skipping 74 matching lines @@
           new DynamicTypeBuilder(const DynamicType(), this, charOffset);
     } else {
       addType(type);
     }
     return type;
   }
 
   KernelTypeBuilder addMixinApplication(KernelTypeBuilder supertype,
       List<KernelTypeBuilder> mixins, int charOffset) {
     KernelTypeBuilder type = new KernelMixinApplicationBuilder(
-        supertype, mixins, charOffset, fileUri);
+        supertype, mixins, this, charOffset, fileUri);
     return addType(type);
   }
 
   KernelTypeBuilder addVoidType(int charOffset) {
     return new KernelNamedTypeBuilder("void", null, charOffset, fileUri);
   }
 
   void addClass(List<MetadataBuilder> metadata,
       int modifiers, String className,
       List<TypeVariableBuilder> typeVariables, KernelTypeBuilder supertype,
@@ skipping 112 matching lines @@
       KernelTypeBuilder bound, int charOffset) {
     var builder = new KernelTypeVariableBuilder(name, this, charOffset, bound);
     boundlessTypeVariables.add(builder);
     return builder;
   }
 
   void buildBuilder(Builder builder) {
     if (builder is SourceClassBuilder) {
       Class cls = builder.build(this);
       library.addClass(cls);
-      Class superclass = cls.superclass;
-      if (superclass != null && superclass.isMixinApplication) {
-        List<Class> mixinApplications = <Class>[];
-        mixinApplicationClasses.add(cls);
-        while (superclass != null && superclass.isMixinApplication) {
-          if (superclass.parent == null) {
-            mixinApplications.add(superclass);
-          }
-          superclass = superclass.superclass;
-        }
-        for (Class cls in mixinApplications.reversed) {
-          // TODO(ahe): Should be able to move this into the above loop as long
-          // as we don't care about matching dartk perfectly.
-          library.addClass(cls);
-          mixinApplicationClasses.add(cls);
-        }
-      }
     } else if (builder is KernelFieldBuilder) {
       library.addMember(builder.build(library)..isStatic = true);
     } else if (builder is KernelProcedureBuilder) {
       library.addMember(builder.build(library)..isStatic = true);
     } else if (builder is FunctionTypeAliasBuilder) {
       // Kernel discard typedefs and use their corresponding function types
       // directly.
     } else if (builder is KernelEnumBuilder) {
       library.addClass(builder.build(this));
     } else if (builder is PrefixBuilder) {
@@ skipping 117 matching lines @@
   }
 }
 
 bool isConstructorName(String name, String className) {
   if (name.startsWith(className)) {
     if (name.length == className.length) return true;
     if (name.startsWith(".", className.length)) return true;
   }
   return false;
 }