diff -up chromium-86.0.4240.75/media/gpu/vaapi/BUILD.gn.i686permissive chromium-86.0.4240.75/media/gpu/vaapi/BUILD.gn
--- chromium-86.0.4240.75/media/gpu/vaapi/BUILD.gn.i686permissive	2020-10-14 16:24:17.803206586 -0400
+++ chromium-86.0.4240.75/media/gpu/vaapi/BUILD.gn	2020-10-14 16:24:59.212530721 -0400
@@ -13,6 +13,10 @@ import("//ui/ozone/ozone.gni")
 assert(is_linux || is_chromeos)
 assert(use_vaapi)
 
+config("vaapi_permissive") {
+  cflags = [ "-fpermissive" ]
+}
+
 generate_stubs("libva_stubs") {
   extra_header = "va_stub_header.fragment"
   sigs = [ "va.sigs" ]
@@ -121,6 +125,8 @@ source_set("vaapi") {
     ]
   }
 
+  configs += [ ":vaapi_permissive" ]
+
   if (use_x11) {
     deps += [ "//ui/gfx/x" ]
     sources += [