Fixes for 32-bit official GN build.

Uses the host toolchain for the dump symbol and stack walk utilities.

Remove the dummy nacl target when nacl is disabled. Previously there was a dummy nacl target but no dummy nacl_helper target. They should be consistent. It turns out we use neither when nacl is disabled, so I removed the existing one.

Unrelated: Update GN quick start with a link to the new sites page I made
for build arguments.

Review URL: https://codereview.chromium.org/1339653004

Cr-Original-Commit-Position: refs/heads/master@{#348477}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 314880aa20d7e71bc01515afa7b9c82e763f4218
1 file changed
tree: a50eb8be01abd83365c5f8af7bc7ccb46f8c9465
  1. tools/