[ABANDONED] Introduce Promise example implementation written in JavaScript.

Source/bindings/v8/V8DOMWindowShell.h

Index: Source/bindings/v8/V8DOMWindowShell.h
diff --git a/Source/bindings/v8/V8DOMWindowShell.h b/Source/bindings/v8/V8DOMWindowShell.h
index 9e529189f87f4b090da1e742375cd7e6b4cc8d3d..44d1de5410432c138a3c906dbdfe9e6d64d41aa0 100644
--- a/Source/bindings/v8/V8DOMWindowShell.h
+++ b/Source/bindings/v8/V8DOMWindowShell.h
@@ -54,6 +54,22 @@ class HTMLDocument;
 // persist between navigations.
 class V8DOMWindowShell {
 public:
+    enum ContextDescriptor {
+        DomContext,
+        BlinkJSContext,
+    };
+
+    class ContextScope {
+    public:
+        ContextScope(V8DOMWindowShell*, ContextDescriptor);
+        ~ContextScope() { }
+
+        static V8DOMWindowShell* currentWindowShell();
+    private:
+        ContextDescriptor m_descriptor;
+        v8::Context::Scope m_scope;
+    };
+
     static PassOwnPtr<V8DOMWindowShell> create(Frame*, PassRefPtr<DOMWrapperWorld>, v8::Isolate*);
 
     v8::Local<v8::Context> context() const { return v8::Local<v8::Context>::New(m_context.get()); }
@@ -103,10 +119,12 @@ private:
     v8::Isolate* m_isolate;
 
     OwnPtr<V8PerContextData> m_perContextData;
+    OwnPtr<V8PerContextData> m_perContextDataForBlinkJS;
 
     ScopedPersistent<v8::Context> m_context;
     ScopedPersistent<v8::Object> m_global;
     ScopedPersistent<v8::Object> m_document;
+    ScopedPersistent<v8::Context> m_contextForBlinkJS;
 };
 
 } // namespace WebCore