GitLab

Add Win10 versions of some bots for which there were previously only
Win7.

This is a prerequisite to making changes in the tools/build workspace
which will rename some of these bots.

TBR=zmo@chromium.org, jmadill@chromium.org

Bug: 807340
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: If95f57e888cbd5aceaa32a20e21d430b9cafa999
Reviewed-on: https://chromium-review.googlesource.com/896840Reviewed-by: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533860}