Argh, we can't update MultiThreadGemm to use the new WorkersPool::Execute signature, because TensorFlow uses it against its own WorkersPool class.
Argh, we can't update MultiThreadGemm to use the new
WorkersPool::Execute signature, because TensorFlow uses it against its
own WorkersPool class.

google/gemmlowp,google/gemmlowp,google/gemmlowp,google/gemmlowp