Add a DevTools command to create an isolated world for a given frame

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

 /*
  * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. 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
@@ skipping 353 matching lines @@
   if (results) {
     for (size_t i = 0; i < result_array->Length(); ++i) {
       v8::Local<v8::Value> value;
       if (!result_array->Get(context, i).ToLocal(&value))
         return;
       results->push_back(value);
     }
   }
 }
 
+void ScriptController::EnsureIsolatedWorld(int world_id) {
+  RefPtr<DOMWrapperWorld> world =
+      DOMWrapperWorld::EnsureIsolatedWorld(GetIsolate(), world_id);
+  // Make sure the execution context exists.
+  WindowProxy(*world);
+}
+
 }  // namespace blink