Remove signature classes from the VM.

runtime/vm/object_store.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/object_store.h"
 
 #include "vm/exceptions.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
 #include "vm/symbols.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
 ObjectStore::ObjectStore()
   : object_class_(Class::null()),
     object_type_(Type::null()),
     null_class_(Class::null()),
     null_type_(Type::null()),
     function_type_(Type::null()),
-    function_impl_type_(Type::null()),
+    closure_class_(Class::null()),
     number_type_(Type::null()),
     int_type_(Type::null()),
     integer_implementation_class_(Class::null()),
     smi_class_(Class::null()),
     smi_type_(Type::null()),
     mint_class_(Class::null()),
     mint_type_(Type::null()),
     bigint_class_(Class::null()),
     double_class_(Class::null()),
     double_type_(Type::null()),
@@ skipping 167 matching lines @@
   cls = async_lib.LookupClass(Symbols::StreamIterator());
   ASSERT(!cls.IsNull());
   set_stream_iterator_class(cls);
 
   const Library& internal_lib = Library::Handle(internal_library());
   cls = internal_lib.LookupClass(Symbols::Symbol());
   set_symbol_class(cls);
 }
 
 }  // namespace dart