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

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

Index: third_party/WebKit/Source/bindings/core/v8/ScriptController.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptController.h b/third_party/WebKit/Source/bindings/core/v8/ScriptController.h
index 94203c30a5040019de9bbd7657eed598696dd2ce..961240de161bda7678a991f78d4bfd76fed56bb0 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptController.h
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptController.h
@@ -112,6 +112,10 @@ class CORE_EXPORT ScriptController final
   // Returns true if argument is a JavaScript URL.
   bool ExecuteScriptIfJavaScriptURL(const KURL&, Element*);
 
+  // Creates a new isolated world with the given human readable |world_name| and
+  // returns it's id.
+  int CreateNewIsolatedWorld(const String& world_name);
+
   // Returns true if the current world is isolated, and has its own Content
   // Security Policy. In this case, the policy of the main world should be
   // ignored when evaluating resources injected into the DOM.