Make LogMatchingTracker, SimpleLogMatchingTracker, CombinationLogMatchingTracker, LogTracker, and AtomMatcher naming consistent

Bug: 163421298
Test: `m statsd`
Test: `m statsd_test`
Test: `m`
Test: `atest statsd_test`
Change-Id: I626be9507b64959d3dcb7f260c62229f0f1d0140
23 files changed