Transitively keep track of an isolated world's children scripts and worlds.

third_party/WebKit/Source/bindings/core/v8/DOMWrapperWorld.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 119 matching lines @@
 
 void DOMWrapperWorld::allWorldsInMainThread(Vector<RefPtr<DOMWrapperWorld>>& worlds)
 {
     ASSERT(isMainThread());
     worlds.append(&mainWorld());
     WorldMap& isolatedWorlds = isolatedWorldMap();
     for (WorldMap::iterator it = isolatedWorlds.begin(); it != isolatedWorlds.end(); ++it)
         worlds.append(it->value);
 }
 
+Vector<RefPtr<DOMWrapperWorld>>& DOMWrapperWorld::originWorldStack()
+{
+    ASSERT(isMainThread());
+    DEFINE_STATIC_LOCAL(Vector<RefPtr<DOMWrapperWorld>>, worldStack, ());
+    return worldStack;
+}
+
 DOMWrapperWorld::~DOMWrapperWorld()
 {
     ASSERT(!isMainWorld());
 
     dispose();
 
     if (!isIsolatedWorld())
         return;
 
     WorldMap& map = isolatedWorldMap();
@@ skipping 132 matching lines @@
     m_domObjectHolders.remove(holderBase);
 }
 
 void DOMWrapperWorld::weakCallbackForDOMObjectHolder(const v8::WeakCallbackInfo<DOMObjectHolderBase>& data)
 {
     DOMObjectHolderBase* holderBase = data.GetParameter();
     holderBase->world()->unregisterDOMObjectHolder(holderBase);
 }
 
 } // namespace blink