Some build changes for nacl on Android

Some build changes for nacl on Android

1) Use TOOLCHAIN_OS rather than OS for package names
2) gpu_nacl.gyp shouldn't include trusted code test dependencies.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3032
R=bbudge@chromium.org, bradnelson@google.com, piman@chromium.org, sievers@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=272345

[sehr, 2014-05-22 15:13:48]

Another couple of small steps toward getting nacl to run in clank.  PTAL.

[bbudge, 2014-05-22 17:13:24]

rubberstamp lgtm

[bradn, 2014-05-22 17:14:55]

lgtm

[sehr, 2014-05-22 19:26:47]

The CQ bit was checked by sehr@chromium.org

[commit-bot: I haz the power, 2014-05-22 19:28:42]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sehr@chromium.org/295933013/1

[commit-bot: I haz the power, 2014-05-22 19:53:34]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  chromium_presubmit on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/chromium_presubmit/bu...)

[commit-bot: I haz the power, 2014-05-22 20:00:37]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-05-22 20:00:37]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/chromium_presubmit/bu...)

[sehr, 2014-05-22 21:22:44]

piman, sievers,

I need an OWNER lgtm for this CL.  If you please, kind sirs.

David

[no sievers, 2014-05-22 21:24:46]

lgtm

[piman, 2014-05-22 21:55:25]

lgtm

[sehr, 2014-05-22 22:19:39]

Committed patchset #1 manually as r272345 (presubmit successful).