From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Anonymous <anonymous@electronjs.org>
Date: Thu, 20 Sep 2018 17:45:11 -0700
Subject: blink_world_context.patch

This exposes a method for obtaining a reference to an isolated world, which is
otherwise not available in the Blink API.

diff --git a/third_party/blink/public/web/web_local_frame.h b/third_party/blink/public/web/web_local_frame.h
index 0b154417ea7cbbf1ad4b88bc80027a67f16faa7d..c5d9cd52989c0d776ac12a5c0b88782d2c40b213 100644
--- a/third_party/blink/public/web/web_local_frame.h
+++ b/third_party/blink/public/web/web_local_frame.h
@@ -334,6 +334,9 @@ class WebLocalFrame : public WebFrame {
   // be calling this API.
   virtual v8::Local<v8::Context> MainWorldScriptContext() const = 0;
 
+  virtual v8::Local<v8::Context> WorldScriptContext(
+      v8::Isolate* isolate, int world_id) const = 0;
+
   // Executes script in the context of the current page and returns the value
   // that the script evaluated to with callback. Script execution can be
   // suspend.
diff --git a/third_party/blink/renderer/core/frame/web_local_frame_impl.cc b/third_party/blink/renderer/core/frame/web_local_frame_impl.cc
index 2660078b0ed37bc3313e645f59e38cd306b1fdca..9cb4f3d02fccd6f1098c9b8080f1057642aead5f 100644
--- a/third_party/blink/renderer/core/frame/web_local_frame_impl.cc
+++ b/third_party/blink/renderer/core/frame/web_local_frame_impl.cc
@@ -922,6 +922,13 @@ v8::Local<v8::Object> WebLocalFrameImpl::GlobalProxy() const {
   return MainWorldScriptContext()->Global();
 }
 
+v8::Local<v8::Context> WebLocalFrameImpl::WorldScriptContext(
+    v8::Isolate* isolate, int world_id) const {
+  scoped_refptr<DOMWrapperWorld> world = DOMWrapperWorld::EnsureIsolatedWorld(
+      isolate, world_id);
+  return ToScriptState(GetFrame(), *world)->GetContext();
+}
+
 bool WebFrame::ScriptCanAccess(WebFrame* target) {
   return BindingSecurity::ShouldAllowAccessToFrame(
       CurrentDOMWindow(V8PerIsolateData::MainThreadIsolate()),
diff --git a/third_party/blink/renderer/core/frame/web_local_frame_impl.h b/third_party/blink/renderer/core/frame/web_local_frame_impl.h
index a8d2023b6b33f56af0dab8909f5863f4be68a311..d7582f9c2f733d4beeb294df34dcbf09ce3970ce 100644
--- a/third_party/blink/renderer/core/frame/web_local_frame_impl.h
+++ b/third_party/blink/renderer/core/frame/web_local_frame_impl.h
@@ -160,6 +160,8 @@ class CORE_EXPORT WebLocalFrameImpl final
       int argc,
       v8::Local<v8::Value> argv[]) override;
   v8::Local<v8::Context> MainWorldScriptContext() const override;
+  v8::Local<v8::Context> WorldScriptContext(
+      v8::Isolate* isolate, int world_id) const override;
   void RequestExecuteScriptAndReturnValue(const WebScriptSource&,
                                           bool user_gesture,
                                           WebScriptExecutionCallback*) override;
