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 8edd75d1.

Change-Id: I8cd83bb5871dea81abea61554b182825145298e6
Reviewed-on: https://chromium-review.googlesource.com/281208Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>