Add a feature to control if we drop records due to excess events. Enabled by default as this is cur…

Add a feature to control if we drop UMA records due to excess events. 

Enabled by default as this is current behavior.

BUG=682329
Review-Url: https://codereview.chromium.org/2646163004
Cr-Commit-Position: refs/heads/master@{#445210}
Committed: https://chromium.googlesource.com/chromium/src/+/02e248436f3736e6b85ab4c47452ce13611cdd11

[rkaplow, 2017-01-20 21:38:07]

Description was changed from

==========
Add a feature to control if we drop records due to excess events. Enabled by
default as this is current behavior.

BUG=682329
==========

to

==========
Add a feature to control if we drop UMA records due to excess events. 

Enabled by default as this is current behavior.

BUG=682329
==========

[rkaplow, 2017-01-20 21:43:19]

rkaplow@chromium.org changed reviewers:
+ asvitkine@chromium.org

[rkaplow, 2017-01-20 21:45:50]

I first made a separate histogram tracking the else {} case, but that seemed
like a worse design and repurposed the current one. The reason is this will
primarily be evaluated through fields trials, so I'll be able to compare the
same histogram directly.

[Alexei Svitkine (slow), 2017-01-20 21:50:59]

lgtm

[rkaplow, 2017-01-20 22:35:20]

The CQ bit was checked by rkaplow@chromium.org

[commit-bot: I haz the power, 2017-01-20 22:35:57]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-20 23:39:45]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1484951720472030,
"parent_rev": "09ea813b94b774eb623f58baf1a84019be54a844", "commit_rev":
"02e248436f3736e6b85ab4c47452ce13611cdd11"}

[commit-bot: I haz the power, 2017-01-20 23:40:19]

Description was changed from

==========
Add a feature to control if we drop UMA records due to excess events. 

Enabled by default as this is current behavior.

BUG=682329
==========

to

==========
Add a feature to control if we drop UMA records due to excess events. 

Enabled by default as this is current behavior.

BUG=682329

Review-Url: https://codereview.chromium.org/2646163004
Cr-Commit-Position: refs/heads/master@{#445210}
Committed:
https://chromium.googlesource.com/chromium/src/+/02e248436f3736e6b85ab4c47452...
==========

[commit-bot: I haz the power, 2017-01-20 23:40:21]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/02e248436f3736e6b85ab4c47452...