Switch RemoteWindowProxy to use v8::Context::NewRemoteContext.

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

Index: third_party/WebKit/Source/bindings/core/v8/RemoteWindowProxy.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/RemoteWindowProxy.h b/third_party/WebKit/Source/bindings/core/v8/RemoteWindowProxy.h
index d85780fc5314d70a4c847fe33fa65b381d15f82b..544fea0fa7289411f40e0ceccb1181863e571de1 100644
--- a/third_party/WebKit/Source/bindings/core/v8/RemoteWindowProxy.h
+++ b/third_party/WebKit/Source/bindings/core/v8/RemoteWindowProxy.h
@@ -32,6 +32,7 @@
 #define RemoteWindowProxy_h
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
+#include "bindings/core/v8/WindowProxy.h"
 #include "core/frame/RemoteFrame.h"
 #include <v8.h>
 
@@ -42,7 +43,6 @@ class RemoteWindowProxy final : public WindowProxy {
  public:
   static RemoteWindowProxy* create(v8::Isolate* isolate,
                                    RemoteFrame& frame,
-
                                    RefPtr<DOMWrapperWorld> world) {
     return new RemoteWindowProxy(isolate, frame, std::move(world));
   }
@@ -58,6 +58,8 @@ class RemoteWindowProxy final : public WindowProxy {
   // prototype chain do not get fully initialized yet, e.g. the window
   // wrapper is not yet associated with the native DOMWindow object.
   void createContext();
+
+  void setupWindowPrototypeChain();
 };
 
 }  // namespace blink