diff -up chromium-62.0.3192.0/media/BUILD.gn.proprietary-codecs chromium-62.0.3192.0/media/BUILD.gn
--- chromium-62.0.3192.0/media/BUILD.gn.proprietary-codecs	2017-08-30 16:13:04.296259457 +0200
+++ chromium-62.0.3192.0/media/BUILD.gn	2017-08-30 16:18:23.778444612 +0200
@@ -33,12 +33,6 @@ buildflag_header("media_features") {
   ]
 }
 
-if (proprietary_codecs && media_use_ffmpeg) {
-  assert(
-      ffmpeg_branding != "Chromium",
-      "proprietary codecs and ffmpeg_branding set to Chromium are incompatible")
-}
-
 # Common configuration for targets in the media directory; these must not be
 # exported since things like USE_NEON and USE_CRAS have different meanings
 # elsewhere in the code base.