From e83d8d6a131ad39b98c97c945ccf77bcd723378f Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Tue, 9 Nov 2021 14:21:58 -0500
Subject: [PATCH] Trial fix for CORS pre-flight requests missing headers (see
 issue #3110, see issue #3200)

---
 libcef/browser/net_service/proxy_url_loader_factory.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libcef/browser/net_service/proxy_url_loader_factory.cc b/libcef/browser/net_service/proxy_url_loader_factory.cc
index cdefeb7d3..603b560ea 100644
--- a/libcef/browser/net_service/proxy_url_loader_factory.cc
+++ b/libcef/browser/net_service/proxy_url_loader_factory.cc
@@ -158,13 +158,13 @@ class CorsPreflightRequest : public network::mojom::TrustedHeaderClient {
   // mojom::TrustedHeaderClient methods:
   void OnBeforeSendHeaders(const net::HttpRequestHeaders& headers,
                            OnBeforeSendHeadersCallback callback) override {
-    std::move(callback).Run(net::OK, absl::nullopt);
+    std::move(callback).Run(net::OK, headers);
   }
 
   void OnHeadersReceived(const std::string& headers,
                          const net::IPEndPoint& remote_endpoint,
                          OnHeadersReceivedCallback callback) override {
-    std::move(callback).Run(net::OK, absl::nullopt, GURL());
+    std::move(callback).Run(net::OK, headers, /*redirect_url=*/GURL());
     OnDestroy();
   }