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runtime/bin/isolate_data.h

Index: runtime/bin/isolate_data.h
diff --git a/runtime/bin/isolate_data.h b/runtime/bin/isolate_data.h
index eaaa3fbe4c25a8a02f95861c839489ef5036693f..179bde5d1ae36bf01d4656ecaefabf29e8cfc306 100644
--- a/runtime/bin/isolate_data.h
+++ b/runtime/bin/isolate_data.h
@@ -23,7 +23,8 @@ class IsolateData {
   explicit IsolateData(const char* url, const char* package_root)
       : script_url(strdup(url)),
         package_root(NULL),
-        udp_receive_buffer(NULL) {
+        udp_receive_buffer(NULL),
+        load_async_id(-1) {
     if (package_root != NULL) {
       this->package_root = strdup(package_root);
     }
@@ -37,6 +38,7 @@ class IsolateData {
   char* script_url;
   char* package_root;
   uint8_t* udp_receive_buffer;
+  int64_t load_async_id;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(IsolateData);