From a5d5e76b1080461782e396f40fbaf534b71a7208 Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Wed, 22 Jan 2020 05:03:17 -0800
Subject: [PATCH] fix: some websites using WebComponents V0 not loading
 (#21858)

---
 shell/browser/feature_list.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/shell/browser/feature_list.cc b/shell/browser/feature_list.cc
index b19596b7b429b..685142821698d 100644
--- a/shell/browser/feature_list.cc
+++ b/shell/browser/feature_list.cc
@@ -27,6 +27,13 @@ void InitializeFeatureList() {
   // when node integration is enabled.
   disable_features +=
       std::string(",") + features::kSpareRendererForSitePerProcess.name;
+
+  // https://www.polymer-project.org/blog/2018-10-02-webcomponents-v0-deprecations
+  // https://chromium-review.googlesource.com/c/chromium/src/+/1869562
+  // Any website which uses older WebComponents will fail in without this
+  // enabled, since Electron does not support origin trials.
+  enable_features += std::string(",") + "WebComponentsV0Enabled";
+
 #if !BUILDFLAG(ENABLE_PICTURE_IN_PICTURE)
   disable_features += std::string(",") + media::kPictureInPicture.name;
 #endif