This is done by triggering an "analyze" exclusion already in
trybot_analyze_config.json.

BUG=692823
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
R=zmo@chromium.org

Review-Url: https://codereview.chromium.org/2698833002
Cr-Commit-Position: refs/heads/master@{#451070}