Remove support for conflicting constructors.

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

Index: sdk/lib/_internal/compiler/implementation/closure.dart
diff --git a/sdk/lib/_internal/compiler/implementation/closure.dart b/sdk/lib/_internal/compiler/implementation/closure.dart
index 6abb7bd1113721252116155b45b0f4946b600be3..2fd29dacc6e7b5c837c8061ecd7f3bde81ce885c 100644
--- a/sdk/lib/_internal/compiler/implementation/closure.dart
+++ b/sdk/lib/_internal/compiler/implementation/closure.dart
@@ -671,9 +671,17 @@ class ClosureTranslator extends Visitor {
               || enclosingElement.kind == ElementKind.GETTER
               || enclosingElement.kind == ElementKind.SETTER);
          enclosingElement = enclosingElement.enclosingElement) {
-      SourceString surroundingName =
-          Elements.operatorNameToIdentifier(enclosingElement.name);
-      parts = parts.prepend(surroundingName.slowToString());
+      // TODO(johnniwinther): Simplify computed names.
+      if (enclosingElement.isGenerativeConstructor() ||
+          enclosingElement.isGenerativeConstructorBody() ||
+          enclosingElement.isFactoryConstructor()) {
+        parts = parts.prepend(
+            Elements.reconstructConstructorName(enclosingElement));
+      } else {
+        SourceString surroundingName =
+            Elements.operatorNameToIdentifier(enclosingElement.name);
+        parts = parts.prepend(surroundingName.slowToString());
+      }
       // A generative constructors's parent is the class; the class name is
       // already part of the generative constructor's name.
       if (enclosingElement.kind == ElementKind.GENERATIVE_CONSTRUCTOR) break;