Add an API to create a detached global object

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 9eddbb71c5fdbb6611f90c2eb1f9f79091172042..a648fe9e370081c96c516b4926c4b1458f55dac7 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -7145,6 +7145,14 @@ class V8_EXPORT Context {
       size_t context_snapshot_index = 0);
 
   /**
+   * Returns an detached global that can be passed into Context::New.
+   *
+   * The global template needs to have access checks with handlers installed.
+   */
+  static Local<Object> NewDetachedGlobal(Isolate* isolate,
+                                         Local<ObjectTemplate> global_template);
+
+  /**
    * Sets the security token for the context.  To access an object in
    * another context, the security tokens must match.
    */