Remove mirrors in product mode

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 1347 matching lines @@
   RegisterPrivateClass(cls, Symbols::_Closure(), core_lib);
   pending_classes.Add(cls);
   object_store->set_closure_class(cls);
 
   cls = Class::New<WeakProperty>();
   object_store->set_weak_property_class(cls);
   RegisterPrivateClass(cls, Symbols::_WeakProperty(), core_lib);
 
   // Pre-register the mirrors library so we can place the vm class
   // MirrorReference there rather than the core library.
+NOT_IN_PRODUCT(
   lib = Library::LookupLibrary(Symbols::DartMirrors());
   if (lib.IsNull()) {
     lib = Library::NewLibraryHelper(Symbols::DartMirrors(), true);
     lib.SetLoadRequested();
     lib.Register();
     object_store->set_bootstrap_library(ObjectStore::kMirrors, lib);
   }
   ASSERT(!lib.IsNull());
   ASSERT(lib.raw() == Library::MirrorsLibrary());
 
   cls = Class::New<MirrorReference>();
-  RegisterPrivateClass(cls, Symbols::_MirrorReference(), lib);
+  RegisterPrivateClass(cls, Symbols::_MirrorReference(), lib));
 
   // Pre-register the collection library so we can place the vm class
   // LinkedHashMap there rather than the core library.
   lib = Library::LookupLibrary(Symbols::DartCollection());
   if (lib.IsNull()) {
     lib = Library::NewLibraryHelper(Symbols::DartCollection(), true);
     lib.SetLoadRequested();
     lib.Register();
     object_store->set_bootstrap_library(ObjectStore::kCollection, lib);
   }
@@ skipping 20071 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart