Revert 167276 "Remove isolatedWorldForEnteredContext() and isola..."

trunk/Source/bindings/v8/V8Binding.h

Index: trunk/Source/bindings/v8/V8Binding.h
===================================================================
--- trunk/Source/bindings/v8/V8Binding.h	(revision 167359)
+++ trunk/Source/bindings/v8/V8Binding.h	(working copy)
@@ -614,6 +614,8 @@
     WrapperWorldType worldType(v8::Isolate*);
     WrapperWorldType worldTypeInMainThread(v8::Isolate*);
 
+    DOMWrapperWorld* isolatedWorldForIsolate(v8::Isolate*);
+
     DOMWindow* toDOMWindow(v8::Handle<v8::Value>, v8::Isolate*);
     DOMWindow* toDOMWindow(v8::Handle<v8::Context>);
     ExecutionContext* toExecutionContext(v8::Handle<v8::Context>);
@@ -635,6 +637,14 @@
     // a context, if the window is currently being displayed in the Frame.
     Frame* toFrameIfNotDetached(v8::Handle<v8::Context>);
 
+    inline DOMWrapperWorld* isolatedWorldForEnteredContext(v8::Isolate* isolate)
+    {
+        v8::Handle<v8::Context> context = isolate->GetEnteredContext();
+        if (context.IsEmpty())
+            return 0;
+        return DOMWrapperWorld::isolatedWorld(context);
+    }
+
     // If the current context causes out of memory, JavaScript setting
     // is disabled and it returns true.
     bool handleOutOfMemory();