PNaCl. Builds sandboxed pnacl-sz for arm32.
PNaCl. Builds sandboxed pnacl-sz for arm32.

BUG=

Review URL: https://codereview.chromium.org/1821803002

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client