Clean up VM class DartFunction.

runtime/vm/class_finalizer.cc

 // Copyright (c) 2013, 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 "vm/class_finalizer.h"
 
 #include "vm/flags.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
 #include "vm/longjump.h"
@@ skipping 1909 matching lines @@
       case kArrayCid:
       case kImmutableArrayCid:
       case kGrowableObjectArrayCid:
 #define DO_NOT_EXTEND_TYPED_DATA_CLASSES(clazz)                                \
       case kTypedData##clazz##Cid:                                             \
       case kTypedData##clazz##ViewCid:                                         \
       case kExternalTypedData##clazz##Cid:
       CLASS_LIST_TYPED_DATA(DO_NOT_EXTEND_TYPED_DATA_CLASSES)
 #undef DO_NOT_EXTEND_TYPED_DATA_CLASSES
       case kByteDataViewCid:
-      case kDartFunctionCid:
       case kWeakPropertyCid:
         is_error = true;
         break;
       default: {
         // Special case: classes for which we don't have a known class id.
         if (super_type.IsDoubleType() ||
             super_type.IsIntType() ||
-            super_type.IsStringType()) {
+            super_type.IsStringType() ||
+            super_type.IsFunctionType()) {
           is_error = true;
         }
         break;
       }
     }
     if (is_error) {
       const Script& script = Script::Handle(cls.script());
       ReportError(Error::Handle(),  // No previous error.
                   script, cls.token_pos(),
                   "'%s' is not allowed to extend '%s'",
@@ skipping 275 matching lines @@
   expected_name ^= String::New("_offset");
   ASSERT(String::EqualsIgnoringPrivateKey(name, expected_name));
   field ^= fields_array.At(2);
   ASSERT(field.Offset() == TypedDataView::length_offset());
   name ^= field.name();
   ASSERT(name.Equals("length"));
 #endif
 }
 
 }  // namespace dart