From 19d730df8560797473c923bfe371de4bb203338a Mon Sep 17 00:00:00 2001
From: Ivan Kozik <ivan@ludios.org>
Date: Tue, 17 Sep 2019 23:31:08 +0000
Subject: [PATCH] chromium: add patch to fix performance regression with fonts

This reverts a commit to fix a serious performance regression
introduced in Chromium 77:

https://bugs.chromium.org/p/chromium/issues/detail?id=1003997
---
 pkgs/applications/networking/browsers/chromium/common.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/applications/networking/browsers/chromium/common.nix b/pkgs/applications/networking/browsers/chromium/common.nix
index 6d43c313cc0..744ad79062b 100644
--- a/pkgs/applications/networking/browsers/chromium/common.nix
+++ b/pkgs/applications/networking/browsers/chromium/common.nix
@@ -138,6 +138,13 @@ let
       ./patches/jumbo-sorted.patch
       ./patches/no-build-timestamps.patch
       ./patches/widevine.patch
+      # Revert "Implement GetFallbackFont on Linux" to fix a performance regression
+      # Remove after https://bugs.chromium.org/p/chromium/issues/detail?id=1003997 is fixed
+      (fetchpatch {
+        url = "https://github.com/chromium/chromium/commit/5a32abe4247f80fdb55c55a289b906b0e42faa5f.patch";
+        sha256 = "1a4jqmki6cyi2dwvaszh01db2diqnz1d50mhpdpby3dd1cw0xmfy";
+        revert = true;
+      })
 
       # Unfortunately, chromium regularly breaks on major updates and
       # then needs various patches backported in order to be compiled with GCC.