Add missing kasko_features dependency on chrome_nacl_win64.
Add missing kasko_features dependency on chrome_nacl_win64.

There are two targets with crash_keys.cc, both of which need
kasko_features.h generated. Otherwise, building chrome_nacl_win64
in a fresh build directory doesn't work.

BUG=none

Review URL: https://codereview.chromium.org/1637513004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#371391}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk