Use v8::Context::NewRemoteContext in RemoteWindowProxy.

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

Index: third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.cpp b/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.cpp
index c402611078422e49fe7c9245c90d9a4612537e11..049f2df7203fd461c12fcf92f45ffd3b7ea02098 100644
--- a/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/LocalWindowProxy.cpp
@@ -220,8 +220,9 @@ void LocalWindowProxy::setupWindowPrototypeChain() {
   // The global object, aka window wrapper object.
   v8::Local<v8::Object> windowWrapper =
       globalProxy->GetPrototype().As<v8::Object>();
-  windowWrapper = V8DOMWrapper::associateObjectWithWrapper(
-      isolate(), window, wrapperTypeInfo, windowWrapper);
+  v8::Local<v8::Object> associatedWrapper =
+      associateWithWrapper(window, wrapperTypeInfo, windowWrapper);
+  DCHECK(associatedWrapper == windowWrapper);
 
   // The prototype object of Window interface.
   v8::Local<v8::Object> windowPrototype =