From 95a867b795574689c9b6e93e3d327ccc8171eb56 Mon Sep 17 00:00:00 2001
From: Milan Burda <milan.burda@gmail.com>
Date: Sat, 6 Nov 2021 03:55:19 +0100
Subject: [PATCH] fix: <webview> background transparency (#31722)

---
 shell/browser/api/electron_api_web_contents.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/shell/browser/api/electron_api_web_contents.cc b/shell/browser/api/electron_api_web_contents.cc
index de8b89afc23..bc1d5fa9016 100644
--- a/shell/browser/api/electron_api_web_contents.cc
+++ b/shell/browser/api/electron_api_web_contents.cc
@@ -1457,7 +1457,8 @@ void WebContents::HandleNewRenderFrame(
   // Set the background color of RenderWidgetHostView.
   auto* web_preferences = WebContentsPreferences::From(web_contents());
   if (web_preferences) {
-    absl::optional<SkColor> color = web_preferences->GetBackgroundColor();
+    absl::optional<SkColor> color =
+        IsGuest() ? SK_ColorTRANSPARENT : web_preferences->GetBackgroundColor();
     web_contents()->SetPageBaseBackgroundColor(color);
     rwhv->SetBackgroundColor(color.value_or(SK_ColorWHITE));
   }