Use ARCH_CPU_X86_FAMILY instead of SSE, for subnormal float disabler

MSC doesn't define SSE, so this wasn't working properly on Windows

TBR=fserb@chromium.org

(cherry picked from commit a9563a849fc62ce0be68cb60fe740d48eff397a3)

Bug: 686253
Change-Id: I5e49e9dec43228288261160d8e9eede9b4a6bf75
Reviewed-on: https://chromium-review.googlesource.com/570351
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Reviewed-by: Vladimir Levin <vmpstr@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#486517}
Reviewed-on: https://chromium-review.googlesource.com/574741
Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Cr-Commit-Position: refs/branch-heads/3112@{#632}
Cr-Branched-From: b6460e24cf59f429d69de255538d0fc7a425ccf9-refs/heads/master@{#474897}
2 files changed