Calculates atomic counter buffer's shader reference according to its
child counters.
Merges GL_UNIFORM_BLOCK_* queries to GL_*.
Refreshes deqp_gles31_test_expectations.

BUG=angleproject:1920
TEST=angle_end2end_tests:ProgramInterfaceTest*
     dEQP-GLES31.functional.state_query.program.active_atomic_counter_buffers_get_programiv
     dEQP-GLES31.functional.layout_binding.ubo.*
Change-Id: Ia23ddfef5f5dd7e15628f4c259273e1c01c14d80
Reviewed-on: https://chromium-review.googlesource.com/715436
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>