Revert 240804 "[NaCl SDK] Add option to test_projects to build p..."

Speculative revert to fix 32-bit NaCl failures.

> [NaCl SDK] Add option to test_projects to build project first.
> 
> You can now pass -b to test_projects to build the projects you specify.
> 
> I've also removed the -p options for test_projects and build_projects. They've
> been deprecated for a while, and I don't think anyone is using them anymore.
> 
> BUG=none
> R=sbc@chromium.org
> 
> Review URL: https://codereview.chromium.org/105833005

TBR=binji@chromium.org

Review URL: https://codereview.chromium.org/115783002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240851 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240851