metrics: rename termination, suspend, dark resume action time histograms

metrics: rename termination, suspend, dark resume action time histograms

Rename termination, suspend, and dark resume action time histograms. This is to
accomodate to the change in the max value of these non-enumerated histograms
introduced in Chrome OS CL:238890.

BUG=chromium:443458
TEST=none.

Committed: https://crrev.com/41c2931fe895cf041e9da396166d0b1e3dd9a6aa
Cr-Commit-Position: refs/heads/master@{#313422}

[samueltan1, 2015-01-07 22:34:45]

samueltan@google.com changed reviewers:
+ asvitkine@chromium.org, samueltan@google.com

[Alexei Svitkine (slow), 2015-01-07 22:36:26]

lgtm

[samueltan1, 2015-01-28 03:07:09]

The CQ bit was checked by samueltan@google.com

[commit-bot: I haz the power, 2015-01-28 03:08:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/819713007/1

[commit-bot: I haz the power, 2015-01-28 04:04:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-28 04:06:33]

Patchset 1 (id:??) landed as
https://crrev.com/41c2931fe895cf041e9da396166d0b1e3dd9a6aa
Cr-Commit-Position: refs/heads/master@{#313422}