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latency_info was including and depending upon gfx, but it isn't actually
using anything from there. This removes the deps and fixs the targets that
were using gfx.

BUG=none
TEST=none

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: I7f5f04316b9d11d55ed442d99e34e4155e36566a
Reviewed-on: https://chromium-review.googlesource.com/c/1267516Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#597638}