Push the latency histograms to statsd

Cherry pick from master with no changes: https://googleplex-android-review.git.corp.google.com/c/platform/frameworks/base/+/14161187

Test: unit tests, verified atom logging with statsd_testdrive
Bug: 180584913

Change-Id: I0b8db72c0cb3b285177bbe402ce37639c468dbf3
Merged-In: I0b8db72c0cb3b285177bbe402ce37639c468dbf3
(cherry picked from commit a28ccaf3)