remove obsolete UninferredClosure type

pkg/analyzer/lib/src/task/strong/info.dart

 // Copyright (c) 2015, 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.
 
 /// Defines static information collected by the type checker and used later by
 /// emitters to generate code.
 // TODO(jmesserly): this was ported from package:dev_compiler, and needs to be
 // refactored to fit into analyzer.
 library analyzer.src.task.strong.info;
 
@@ skipping 106 matching lines @@
     // types, but the function type is not assignable to the class
     assert(toT.isSubtypeOf(fromT) || fromT.isAssignableTo(toT));
 
     // Handle null call specially.
     if (expression is NullLiteral) {
       // TODO(vsm): Create a NullCast for this once we revisit nonnullability.
       return new DownCastImplicit(rules, expression, cast);
     }
 
     // Inference "casts":
-    if (expression is Literal) {
+    if (expression is Literal || expression is FunctionExpression) {
       // fromT should be an exact type - this will almost certainly fail at
       // runtime.
       return new StaticTypeError(rules, expression, toT, reason: reason);
     }
-    if (expression is FunctionExpression) {
-      // fromT should be an exact type - this will almost certainly fail at
-      // runtime.
-      return new UninferredClosure(rules, expression, cast);
-    }
     if (expression is InstanceCreationExpression) {
       ConstructorElement e = expression.staticElement;
       if (e == null || !e.isFactory) {
         // fromT should be an exact type - this will almost certainly fail at
         // runtime.
         return new StaticTypeError(rules, expression, toT, reason: reason);
       }
     }
 
     // TODO(vsm): Change this to an assert when we have generic methods and
@@ skipping 411 matching lines @@
   @override
   List<Object> get arguments => [node, baseType, expectedType];
   @override
   String get message =>
       'Type check failed: {0} ({1}) is not of type {2}' +
       ((reason == null) ? '' : ' because $reason');
 
   @override
   String get name => 'STRONG_MODE_STATIC_TYPE_ERROR';
 }
-
-//
-// Temporary "casts" of allocation sites - literals, constructor invocations,
-// and closures.  These should be handled by contextual inference.  In most
-// cases, inference will be sufficient, though in some it may unmask an actual
-// error: e.g.,
-//   List<int> l = [1, 2, 3]; // Inference succeeds
-//   List<String> l = [1, 2, 3]; // Inference reveals static type error
-// We're marking all as warnings for now.
-//
-// TODO(vsm,leafp): Remove this.
-class UninferredClosure extends DownCast {
-  UninferredClosure(TypeSystem rules, FunctionExpression expression, Cast cast)
-      : super._internal(rules, expression, cast);
-
-  @override
-  String get name => 'STRONG_MODE_UNINFERRED_CLOSURE';
-
-  toErrorCode() => new StaticTypeWarningCode(name, message);
-}