Prepare WindowProxy for using v8::Context::NewRemoteContext().

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

Index: third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h b/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h
index 5283aa62f914d04c09825afb277e19e50b2aef6f..c6b8cd6a5f5d94df36aeb3bb6a3fb2cfa29d4432 100644
--- a/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h
+++ b/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.h
@@ -62,6 +62,11 @@ class LocalWindowProxy final : public WindowProxy {
   // (e.g., after setting docoument.domain).
   void updateSecurityOrigin(SecurityOrigin*);
 
+  ScriptState* getScriptState() const { return m_scriptState.get(); }
+  v8::Local<v8::Context> contextIfInitialized() const {
+    return m_scriptState ? m_scriptState->context() : v8::Local<v8::Context>();
+  }
+
  private:
   LocalWindowProxy(v8::Isolate*, LocalFrame&, RefPtr<DOMWrapperWorld>);
 
@@ -74,6 +79,10 @@ class LocalWindowProxy final : public WindowProxy {
   // wrapper is not yet associated with the native DOMWindow object.
   void createContext();
 
+  // Associates the window wrapper and its prototype chain with the native
+  // DOMWindow object. Also does some more Window-specific initialization.
+  void setupWindowPrototypeChain();
+
   void setSecurityToken(SecurityOrigin*);
 
   // The JavaScript wrapper for the document object is cached on the global
@@ -85,6 +94,8 @@ class LocalWindowProxy final : public WindowProxy {
   void updateActivityLogger();
 
   LocalFrame* frame() const { return toLocalFrame(WindowProxy::frame()); }
+
+  RefPtr<ScriptState> m_scriptState;
 };
 
 }  // namespace blink