Remove support for conflicting constructors.

sdk/lib/_internal/compiler/implementation/enqueue.dart

 // Copyright (c) 2012, 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.
 
 part of dart2js;
 
 class EnqueueTask extends CompilerTask {
   final ResolutionEnqueuer resolution;
   final CodegenEnqueuer codegen;
 
@@ skipping 24 matching lines @@
         // TODO(ahe): Investigate what makes mixin applications crash
         // this method.
         ClassElementX cls = element;
         cls.ensureResolved(compiler);
         members = cls.localMembers;
         for (var link = cls.computeTypeParameters(compiler);
              !link.isEmpty;
              link = link.tail) {
           addMemberByName(link.head.element);
         }
-      } else if (element.isConstructor()) {
-        SourceString source = Elements.deconstructConstructorName(
-            element.name, element.getEnclosingClass());
-        if (source == null) {
-          // source is null for unnamed constructors.
-          name = '';
-        } else {
-          name = source.slowToString();
-        }
       }
       allElementsByName[name] = allElementsByName.putIfAbsent(
           name, () => const Link<Element>()).prepend(element);
       for (var link = members; !link.isEmpty; link = link.tail) {
         addMemberByName(link.head);
       }
     }
 
     compiler.libraries.values.forEach(addMemberByName);
   }
@@ skipping 681 matching lines @@
     while(!queue.isEmpty) {
       // TODO(johnniwinther): Find an optimal process order for codegen.
       f(queue.removeLast());
     }
   }
 
   void _logSpecificSummary(log(message)) {
     log('Compiled ${generatedCode.length} methods.');
   }
 }