Run nacltest steps in mojob.py test (on linux)

Run nacltest steps in mojob.py test (on linux)

On my linux z620 in debug mode this increases test time from 55s -> 1m5
which is pretty negligible. This code already builds by default on all
linux builds.

Also removes a stale dart-specific section. We run the dart
tests by default now and don't have a separate test list.

R=ncbray@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/1be4f5431fefbf4ac9d8af9cdab7dcf6f882d620

[jamesr, 2015-05-12 23:18:49]

I'd like to do this, unhook the NaCl bots in the master config | change the mojo
recipe to not do a nacltest step, then unwind the step.  The master and recipe
config can happen concurrently once this lands but I don't think either can take
effect until this does without losing test coverage.

[Nick Bray (chromium), 2015-05-12 23:45:36]

LGTM, but mention in the commit message why you're removing the dart tests, or
don't remove them if it's accidental.

https://codereview.chromium.org/1125283009/diff/1/mojo/tools/get_test_list.py
File mojo/tools/get_test_list.py (left):

https://codereview.chromium.org/1125283009/diff/1/mojo/tools/get_test_list.py...
mojo/tools/get_test_list.py:183: if ShouldRunTest("dart"):
Vaporized intentionaly?

[Nick Bray (chromium), 2015-05-12 23:46:11]

Ah, except for ASAN.  :/

[jamesr, 2015-05-12 23:47:32]

On 2015/05/12 23:46:11, Nick Bray (chromium) wrote:
> Ah, except for ASAN.  :/

Ah shit, that's right.  Will fix

[jamesr, 2015-05-12 23:49:26]

OK, let's see if this makes the bots happier. Updated the description to clarify
the dart thingy too (the changes here are a cleanup and shouldn't change which
tests run)

[jamesr, 2015-05-12 23:57:25]

Committed patchset #2 (id:20001) manually as
1be4f5431fefbf4ac9d8af9cdab7dcf6f882d620 (presubmit successful).