Specifiy MethodMirror.isStatic is terms of whether 'this' is permitted.

runtime/lib/mirrors.cc

 // 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.
 
 #include "lib/invocation_mirror.h"
 #include "vm/bootstrap_natives.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
 #include "vm/exceptions.h"
@@ skipping 228 matching lines @@
 static RawInstance* CreateMethodMirror(const Function& func,
                                        const Instance& owner_mirror) {
   const Array& args = Array::Handle(Array::New(12));
   args.SetAt(0, MirrorReference::Handle(MirrorReference::New(func)));
 
   String& name = String::Handle(func.name());
   name = String::IdentifierPrettyNameRetainPrivate(name);
   args.SetAt(1, name);
 
   args.SetAt(2, owner_mirror);
-  args.SetAt(3, Bool::Get(func.is_static()));
+  args.SetAt(3, Bool::Get(func.is_static() && !func.IsClosureFunction()));
   args.SetAt(4, Bool::Get(func.is_abstract()));
   args.SetAt(5, Bool::Get(func.IsGetterFunction()));
   args.SetAt(6, Bool::Get(func.IsSetterFunction()));
 
   bool isConstructor = (func.kind() == RawFunction::kConstructor);
   args.SetAt(7, Bool::Get(isConstructor));
   args.SetAt(8, Bool::Get(isConstructor && func.is_const()));
   args.SetAt(9, Bool::Get(isConstructor && func.IsConstructor()));
   args.SetAt(10, Bool::Get(isConstructor && func.is_redirecting()));
   args.SetAt(11, Bool::Get(isConstructor && func.IsFactory()));
@@ skipping 1696 matching lines @@
 }
 
 DEFINE_NATIVE_ENTRY(TypeMirror_moreSpecificTest, 2) {
   GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, a, arguments->NativeArgAt(0));
   GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, b, arguments->NativeArgAt(1));
   return Bool::Get(a.IsMoreSpecificThan(b, NULL)).raw();
 }
 
 
 }  // namespace dart