Unwrap type if needed on dcall

pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/operations.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.
 
 /// This library defines runtime operations on objects used by the code
 /// generator.
 part of dart._runtime;
 
 class InvocationImpl extends Invocation {
   final Symbol memberName;
@@ skipping 119 matching lines @@
   }
   return noSuchMethod(
       obj, new InvocationImpl(field, JS('', '[#]', value), isSetter: true));
 }
 
 /// Check that a function of a given type can be applied to
 /// actuals.
 _checkApply(type, actuals) => JS(
     '',
     '''(() => {
+  // TODO(vsm): Remove when we no longer need mirrors metadata.
+  // An array is used to encode annotations attached to the type.
+  if ($type instanceof Array) {
+    $type = type[0];
+  }
   if ($actuals.length < $type.args.length) return false;
   let index = 0;
   for(let i = 0; i < $type.args.length; ++i) {
     $check($actuals[i], $type.args[i]);
     ++index;
   }
   if ($actuals.length == $type.args.length) return true;
   let extras = $actuals.length - $type.args.length;
   if ($type.optionals.length > 0) {
     if (extras > $type.optionals.length) return false;
@@ skipping 812 matching lines @@
     name = '+' + name;
   }
   return name;
 }
 
 /// Emulates the implicit "loadLibrary" function provided by a deferred library.
 ///
 /// Libraries are not actually deferred in DDC, so this just returns a future
 /// that completes immediately.
 Future loadLibrary() => new Future.value();