From a89a5c91c4a9d2f3dcba832935d19333c1d442e1 Mon Sep 17 00:00:00 2001
From: Adam Barth <github@adambarth.com>
Date: Thu, 16 Jun 2016 09:25:15 -0700
Subject: [PATCH] The gen_snapshot tool requires this field to be present
 (#2762)

---
 sky/engine/core/dart/natives.dart | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sky/engine/core/dart/natives.dart b/sky/engine/core/dart/natives.dart
index 4d2f58560..528dcd689 100644
--- a/sky/engine/core/dart/natives.dart
+++ b/sky/engine/core/dart/natives.dart
@@ -23,6 +23,9 @@ void _scheduleMicrotask(void callback()) native "ScheduleMicrotask";
 String _getBaseURLString() native "GetBaseURLString";
 Uri _getBaseURL() => Uri.parse(_getBaseURLString());
 
+// Required for gen_snapshot to work correctly.
+int _isolateId;
+
 _getPrintClosure() => _print;
 _getScheduleMicrotaskClosure() => _scheduleMicrotask;
 _getGetBaseURLClosure() => _getBaseURL;
-- 
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