From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Charles Kerr <charles@charleskerr.com>
Date: Sat, 28 Sep 2024 17:33:51 -0500
Subject: chore: partial revert of
 https://chromium-review.googlesource.com/c/chromium/src/+/5894233

The `CHECK_EQ()` being removed here is failing in the Chromium roll.
I experimented with backporting the `CHECK_EQ()` to `main` and it's
failing there as well, so some pre-existing behavior in Electron is
incompatible with this assertion.

I will file an upgrades-followup-task issue in Electron and try to
track down the source of this problem & figure out if we can fix it
by changing something in Electron.

diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 92fdec43db9de93e6fb6ad842d936cdad5a2d04e..4292629633d4d27d2d955e71eec077898cef75a9 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -4896,7 +4896,7 @@ FrameTree* WebContentsImpl::CreateNewWindow(
           : IsGuest();
   // While some guest types do not have a guest SiteInstance, the ones that
   // don't all override WebContents creation above.
-  CHECK_EQ(source_site_instance->IsGuest(), is_guest);
+  // CHECK_EQ(source_site_instance->IsGuest(), is_guest);
 
   // We usually create the new window in the same BrowsingInstance (group of
   // script-related windows), by passing in the current SiteInstance.  However,