diff -up firefox-61.0/gfx/skia/skia/src/jumper/SkJumper_stages.cpp.aarch64-skia firefox-61.0/gfx/skia/skia/src/jumper/SkJumper_stages.cpp

--- firefox-61.0/gfx/skia/skia/src/jumper/SkJumper_stages.cpp.aarch64-skia	2018-06-20 09:19:11.411939714 +0200

+++ firefox-61.0/gfx/skia/skia/src/jumper/SkJumper_stages.cpp	2018-06-20 09:23:36.831919894 +0200

@@ -686,7 +686,7 @@ SI F from_half(U16 h) {

 }

 SI U16 to_half(F f) {

-#if defined(JUMPER_IS_NEON) && defined(__aarch64__) && !defined(SK_BUILD_FOR_GOOGLE3)  // Temporary workaround for some Google3 builds.

+#if 0 && defined(__aarch64__) && !defined(SK_BUILD_FOR_GOOGLE3)  // Temporary workaround for some Google3 builds.

     return vcvt_f16_f32(f);

 #elif defined(JUMPER_IS_HSW) || defined(JUMPER_IS_AVX512)