fuchsia: Switch building from gn_all to all

Bug: 808287
Change-Id: I98e37d5baba3fd8784bbcaf8dcdafdf7f83518d1
Reviewed-on: https://chromium-review.googlesource.com/c/1296838
Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Scott Graham <scottmg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603103}
3 files changed