Revert of Add nacl_loader_unittests to the chromium_builder_tests

Revert of Add nacl_loader_unittests to the chromium_builder_tests (https://codereview.chromium.org/260003005/)

Reason for revert:
Unconditionally adds a nacl dependency, breaks disable_nacl=1 builds

Original issue's description:
> Add nacl_loader_unittests to the chromium_builder_tests
> 
> TEST=ninja -C out/Release chromium_builder_tests
> BUG=364751
> R=hidehiko@chromium.org
> TBR=mseaborn@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266521

TBR=hidehiko@chromium.org,mseaborn@chromium.org,hamaji@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=364751
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266534

[jochen (gone - plz use gerrit), 2014-04-28 13:16:28]

Created Revert of Add nacl_loader_unittests to the chromium_builder_tests

[commit-bot: I haz the power, 2014-04-28 13:16:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jochen@chromium.org/256933004/1

[commit-bot: I haz the power, 2014-04-28 13:18:02]

Change committed as 266534

[hamaji, 2014-04-28 14:12:43]

On 2014/04/28 13:18:02, I haz the power (commit-bot) wrote:
> Change committed as 266534

Oops, thanks...