Hook up two GPU driver bug workarounds.

* scalarize_vec_and_mat_constructor_args
   per discussion with kbr, we decided to turn it on always for
   consistency.
* regenerate_struct_names
   all mac drivers, linux amd drivers

BUG=398694,403957
TEST=gpu_unittests
R=bajones@chromium.org,kbr@chromium.org

Review URL: https://codereview.chromium.org/474093002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@290303 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed