[vm] Enable mirrors in product mode. Allows building a product mode SDK.

runtime/vm/object.h

 // 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.
 
 #ifndef RUNTIME_VM_OBJECT_H_
 #define RUNTIME_VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 3936 matching lines @@
   static void InitNativeWrappersLibrary(Isolate* isolate, bool is_kernel_file);
 
   static RawLibrary* AsyncLibrary();
   static RawLibrary* ConvertLibrary();
   static RawLibrary* CoreLibrary();
   static RawLibrary* CollectionLibrary();
   static RawLibrary* DeveloperLibrary();
   static RawLibrary* InternalLibrary();
   static RawLibrary* IsolateLibrary();
   static RawLibrary* MathLibrary();
-#if !defined(PRODUCT)
+#if !defined(DART_PRECOMPILED_RUNTIME)
   static RawLibrary* MirrorsLibrary();
 #endif
   static RawLibrary* NativeWrappersLibrary();
   static RawLibrary* ProfilerLibrary();
   static RawLibrary* TypedDataLibrary();
   static RawLibrary* VMServiceLibrary();
 
   // Eagerly compile all classes and functions in the library.
   static RawError* CompileAll();
   static RawError* ParseAll(Thread* thread);
@@ skipping 5099 matching lines @@
 
 inline void TypeArguments::SetHash(intptr_t value) const {
   // This is only safe because we create a new Smi, which does not cause
   // heap allocation.
   StoreSmi(&raw_ptr()->hash_, Smi::New(value));
 }
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_OBJECT_H_