Fix product build.

runtime/vm/unit_test.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/unit_test.h"
 
 #include <stdio.h>
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
@@ skipping 74 matching lines @@
   const char* kScript =
       "importedFunc() => 'a';\n"
       "importedIntFunc() => 4;\n"
       "class ImportedMixin {\n"
       "  mixinFunc() => 'mixin';\n"
       "}\n";
   return DartUtils::NewString(kScript);
 }
 
 
+#ifndef PRODUCT
 static bool IsIsolateReloadTestLib(const char* url_name) {
   const char* kIsolateReloadTestLibUri = "test:isolate_reload_helper";
   static const intptr_t kIsolateReloadTestLibUriLen =
       strlen(kIsolateReloadTestLibUri);
   return (strncmp(url_name,
                   kIsolateReloadTestLibUri,
                   kIsolateReloadTestLibUriLen) == 0);
 }
 
 
-#ifndef PRODUCT
 static Dart_Handle IsolateReloadTestLibSource() {
   // Special library with one function.
   return DartUtils::NewString("void reloadTest() native 'Reload_Test';\n");
 }
 
 
 static void ReloadTest(Dart_NativeArguments native_args) {
   DART_CHECK_VALID(TestCase::TriggerReload());
 }
 
@@ skipping 331 matching lines @@
   }
   // Copy the remainder of in to out.
   while (*in != '\0') {
     *out++ = *in++;
   }
   *out = '\0';
 }
 
 
 }  // namespace dart