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

Index: sdk/lib/_internal/compiler/implementation/dart_types.dart
diff --git a/sdk/lib/_internal/compiler/implementation/dart_types.dart b/sdk/lib/_internal/compiler/implementation/dart_types.dart
index 56db7fa8c6fb88ee42960ea170c74df5d3fb1b7a..6036f9b48409718331e3fb66f3f447240aefc0f9 100644
--- a/sdk/lib/_internal/compiler/implementation/dart_types.dart
+++ b/sdk/lib/_internal/compiler/implementation/dart_types.dart
@@ -349,7 +349,7 @@ abstract class GenericType extends DartType {
   TypeDeclarationElement get element;
 
   /// Creates a new instance of this type using the provided type arguments.
-  GenericType _createType(Link<DartType> newTypeArguments);
+  GenericType createInstantiation(Link<DartType> newTypeArguments);
 
   DartType subst(Link<DartType> arguments, Link<DartType> parameters) {
     if (typeArguments.isEmpty) {
@@ -365,7 +365,7 @@ abstract class GenericType extends DartType {
         Types.substTypes(typeArguments, arguments, parameters);
     if (!identical(typeArguments, newTypeArguments)) {
       // Create a new type only if necessary.
-      return _createType(newTypeArguments);
+      return createInstantiation(newTypeArguments);
     }
     return this;
   }
@@ -448,7 +448,7 @@ class InterfaceType extends GenericType {
 
   String get name => element.name;
 
-  InterfaceType _createType(Link<DartType> newTypeArguments) {
+  InterfaceType createInstantiation(Link<DartType> newTypeArguments) {
     return new InterfaceType(element, newTypeArguments);
   }
 
@@ -776,7 +776,7 @@ class TypedefType extends GenericType {
               [Link<DartType> typeArguments = const Link<DartType>()])
       : super(typeArguments);
 
-  TypedefType _createType(Link<DartType> newTypeArguments) {
+  TypedefType createInstantiation(Link<DartType> newTypeArguments) {
     return new TypedefType(element, newTypeArguments);
   }