Remove mirrors in product mode

runtime/vm/bootstrap_natives.cc

Index: runtime/vm/bootstrap_natives.cc
diff --git a/runtime/vm/bootstrap_natives.cc b/runtime/vm/bootstrap_natives.cc
index d0bef869c66072857cbe4383ad27d1d243fa081c..7e1ea342fa3fbb7b394341443864725ee5645fae 100644
--- a/runtime/vm/bootstrap_natives.cc
+++ b/runtime/vm/bootstrap_natives.cc
@@ -28,6 +28,9 @@ static struct NativeEntries {
   int argument_count_;
 } BootStrapEntries[] = {
   BOOTSTRAP_NATIVE_LIST(REGISTER_NATIVE_ENTRY)
+#ifndef PRODUCT
+  MIRRORS_BOOTSTRAP_NATIVE_LIST(REGISTER_NATIVE_ENTRY)
+#endif  // !PRODUCT
 };
 
 
@@ -116,10 +119,11 @@ void Bootstrap::SetupNativeResolver() {
   library.set_native_entry_resolver(resolver);
   library.set_native_entry_symbol_resolver(symbol_resolver);
 
+NOT_IN_PRODUCT(
   library = Library::MirrorsLibrary();
   ASSERT(!library.IsNull());
   library.set_native_entry_resolver(resolver);
-  library.set_native_entry_symbol_resolver(symbol_resolver);
+  library.set_native_entry_symbol_resolver(symbol_resolver));
 
   library = Library::ProfilerLibrary();
   ASSERT(!library.IsNull());