Use v8::Context::NewRemoteContext in RemoteWindowProxy.

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 3e36140d614243ceb2fdbe7216aff534335a3a6f..1538f10fdebc6dfba12436924828a0f13e8a5de1 100644
--- a/third_party/WebKit/Source/bindings/core/v8/RemoteWindowProxy.h
+++ b/third_party/WebKit/Source/bindings/core/v8/RemoteWindowProxy.h
@@ -32,7 +32,6 @@
 #define RemoteWindowProxy_h
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
-#include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/WindowProxy.h"
 #include "core/frame/RemoteFrame.h"
 #include "v8/include/v8.h"
@@ -48,7 +47,6 @@ 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));
   }
@@ -69,7 +67,13 @@ class RemoteWindowProxy final : public WindowProxy {
   // DOMWindow object. Also does some more Window-specific initialization.
   void setupWindowPrototypeChain();
 
-  RefPtr<ScriptState> m_scriptState;
+ private:
+  RemoteFrame* frame() const { return toRemoteFrame(WindowProxy::frame()); }
+
+  WARN_UNUSED_RESULT v8::Local<v8::Object> associateWithWrapper(
+      RemoteDOMWindow*,
+      const WrapperTypeInfo*,
+      v8::Local<v8::Object> wrapper);
 };
 
 }  // namespace blink