This is to enable deduplicating performance tests. We'll
create a hash of all relevant files and send it to perf bots
alongside the other swarming hashes (follow up on infra
side).

This will not actually run on swarming yet, but could at
some later point.

This splits off the cctest executable from other verification
test files, as those are not needed in performance tests.

BUG=chromium:535160
LOG=n

Review URL: https://codereview.chromium.org/1695243002

Cr-Commit-Position: refs/heads/master@{#33989}