From c3c5d6ff37bb9bc6856df41388c0513dab5deb2f Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Mon, 23 Jan 2023 13:42:05 -0500
Subject: [PATCH] chrome: Allow WebUI handling of DevTools scheme (fixes issue
 #3421)

---
 libcef/browser/net/chrome_scheme_handler.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libcef/browser/net/chrome_scheme_handler.cc b/libcef/browser/net/chrome_scheme_handler.cc
index 2a8f02833..4336b39b9 100644
--- a/libcef/browser/net/chrome_scheme_handler.cc
+++ b/libcef/browser/net/chrome_scheme_handler.cc
@@ -30,6 +30,7 @@
 #include "base/values.h"
 #include "cef/grit/cef_resources.h"
 #include "chrome/browser/browser_about_handler.h"
+#include "chrome/browser/devtools/devtools_ui_bindings.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chrome_untrusted_web_ui_configs.h"
 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
@@ -534,6 +535,11 @@ class CefWebUIControllerFactory : public content::WebUIControllerFactory {
 
   // Returns true if WebUI is allowed to handle the specified |url|.
   static bool AllowWebUIForURL(const GURL& url) {
+    if (cef::IsChromeRuntimeEnabled() &&
+        url.SchemeIs(content::kChromeDevToolsScheme)) {
+      return DevToolsUIBindings::IsValidFrontendURL(url);
+    }
+
     if (!url.SchemeIs(content::kChromeUIScheme) &&
         !url.SchemeIs(content::kChromeUIUntrustedScheme)) {
       return false;