Change variable names in gpu info tables to be jumbo compatible

In jumbo compilation many cc files compile in the same translation
unit and if they use the same local variable names, there will
be compilation clashes. That happened in the automatically generated
code with info about various problems in gpu drivers or the like.

This patch makes sure necessary variables have unique names by
adding a unique keyword for each set of data.

Bug: 864986
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: Ief86248f2d17f123602c7e641c286d0550a85d89
Reviewed-on: https://chromium-review.googlesource.com/1151314
Commit-Queue: Daniel Bratell <bratell@opera.com>
Reviewed-by: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578587}