ash: Add VLOG(1) to UserActivityDetector.

ash: Add VLOG(1) to UserActivityDetector.

Add a VLOG(1) message containing event details to
UserActivityDetector. This makes it easier to debug
unexpected user activity, which we've seen in the past.

BUG=none
TBR=nkostylev@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=232985

[Daniel Erat, 2013-11-04 20:54:30]

(got LGTM from Nikita over email, but it looks like chromium-reviews wasn't
cc-ed)

[commit-bot: I haz the power, 2013-11-04 21:20:31]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[commit-bot: I haz the power, 2013-11-04 21:37:42]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/derat@chromium.org/58293003/1

[Nikita (slow), 2013-11-04 22:45:29]

lgtm

[commit-bot: I haz the power, 2013-11-05 01:23:03]

Retried try job too often on linux_aura for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_aura...

[commit-bot: I haz the power, 2013-11-05 04:03:56]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/derat@chromium.org/58293003/1

[commit-bot: I haz the power, 2013-11-05 14:32:53]

Change committed as 232985