Compute mixin application constructors in the ClassElement.constructors getter.

pkg/analyzer/lib/src/generated/incremental_resolver.dart

 // Copyright (c) 2014, 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 engine.incremental_resolver;
 
 import 'dart:collection';
 import 'dart:math' as math;
 
 import 'package:analyzer/src/context/cache.dart'
@@ skipping 166 matching lines @@
     }
   }
 
   @override
   visitClassTypeAlias(ClassTypeAlias node) {
     String name = node.name.name;
     ClassElement element = _findElement(_enclosingUnit.types, name);
     _enclosingClass = element;
     _processElement(element);
     _assertSameTypeParameters(node.typeParameters, element.typeParameters);
-    _processElement(element.unnamedConstructor);
     super.visitClassTypeAlias(node);
   }
 
   @override
   visitCompilationUnit(CompilationUnit node) {
     _processElement(_enclosingUnit);
     super.visitCompilationUnit(node);
   }
 
   @override
@@ skipping 1806 matching lines @@
   @override
   String toString() => name;
 }
 
 class _TokenPair {
   final _TokenDifferenceKind kind;
   final Token oldToken;
   final Token newToken;
   _TokenPair(this.kind, this.oldToken, this.newToken);
 }