Causing runhooks failures:

gyp: Undefined variable deqp_path in C:\b\build\slave\GPU_Win_Builder\build\src\third_party\angle\src\tests\tests.gyp

BUG=angleproject:998
BUG=500736
This reverts commit 3018c206.

Change-Id: I8c0402fb7465101a9331cbb2020693469d644e7e
Reviewed-on: https://chromium-review.googlesource.com/281194Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>