diff -up firefox-70.0/media/libyuv/libyuv/tools_libyuv/autoroller/unittests/testdata/DEPS.chromium.old firefox-70.0/media/libyuv/libyuv/tools_libyuv/autoroller/unittests/testdata/DEPS.chromium
diff -up firefox-70.0/media/webrtc/trunk/Makefile.old firefox-70.0/media/webrtc/trunk/Makefile
diff -up firefox-70.0/old-configure.in.old firefox-70.0/old-configure.in
--- firefox-70.0/old-configure.in.old	2019-10-21 15:13:50.777374423 +0200
+++ firefox-70.0/old-configure.in	2019-10-21 15:13:59.803371294 +0200
@@ -1530,7 +1530,7 @@ MOZ_ARG_WITH_BOOL(system-nss,
     _USE_SYSTEM_NSS=1 )
 
 if test -n "$_USE_SYSTEM_NSS"; then
-    AM_PATH_NSS(3.46.1, [MOZ_SYSTEM_NSS=1], [AC_MSG_ERROR([you don't have NSS installed or your version is too old])])
+    AM_PATH_NSS(3.46.0, [MOZ_SYSTEM_NSS=1], [AC_MSG_ERROR([you don't have NSS installed or your version is too old])])
 fi
 
 NSS_CFLAGS="$NSS_CFLAGS -I${DIST}/include/nss"