Attempt to fix the linker issues by wrapping the template call with a helper

runtime/vm/object.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 "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 3166 matching lines @@
   Class& result = Class::Handle(NewCommon<Instance>(kIllegalCid));
   result.set_library(lib);
   result.set_name(name);
   result.set_script(script);
   result.set_token_pos(token_pos);
   Isolate::Current()->RegisterClass(result);
   return result.raw();
 }
 
 
+RawClass* Class::NewInstanceClass() {
+  return Class::New<Instance>(kIllegalCid);
+}
+
+
 RawClass* Class::NewNativeWrapper(const Library& library,
                                   const String& name,
                                   int field_count) {
   Class& cls = Class::Handle(library.LookupClass(name));
   if (cls.IsNull()) {
     cls = New(library, name, Script::Handle(), TokenPosition::kNoSource);
     cls.SetFields(Object::empty_array());
     cls.SetFunctions(Object::empty_array());
     // Set super class to Object.
     cls.set_super_type(Type::Handle(Type::ObjectType()));
@@ skipping 19625 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart