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Driver may create a compatibility profile context when
collect graphics information on Linux platform, but
command buffer service gets a core profile context
when supports GLX_ARB_create_context, so make them
identically.
Try to collect graphics information based on core profile
context after disabling platform extensions.

BUG=867675

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: Ibf0abc1942532d6518fb7c65ebb857dc4d509171
Reviewed-on: https://chromium-review.googlesource.com/c/1247531Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Xinghua Cao <xinghua.cao@intel.com>
Cr-Commit-Position: refs/heads/master@{#602254}