Add undocumented Memory.* histograms to histograms.xml.

Add undocumented Memory.* histograms to histograms.xml.

Makes them owned by the same people that own other Memory.*
histograms.

Also, adds a summary for a TBD histogram and adds units to
process count histograms.

BUG=642626
Committed: https://crrev.com/792954ab4f88e8c4881a6f686aedb7de4d4bf1f6
Cr-Commit-Position: refs/heads/master@{#415736}

[Alexei Svitkine (slow), 2016-08-31 17:23:45]

Patchset #1 (id:1) has been deleted

[Alexei Svitkine (slow), 2016-08-31 17:24:13]

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

[Ilya Sherman, 2016-08-31 19:07:37]

LGTM, thanks.

[Ilya Sherman, 2016-08-31 19:07:53]

The CQ bit was checked by isherman@chromium.org

[commit-bot: I haz the power, 2016-08-31 19:08:38]

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, 2016-08-31 20:14:23]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2016-08-31 20:17:33]

Description was changed from

==========
Add undocumented Memory.* histograms to histograms.xml.

Makes them owned by the same people that own other Memory.*
histograms.

Also, adds a summary for a TBD histogram and adds units to
process count histograms.

BUG=642626
==========

to

==========
Add undocumented Memory.* histograms to histograms.xml.

Makes them owned by the same people that own other Memory.*
histograms.

Also, adds a summary for a TBD histogram and adds units to
process count histograms.

BUG=642626

Committed: https://crrev.com/792954ab4f88e8c4881a6f686aedb7de4d4bf1f6
Cr-Commit-Position: refs/heads/master@{#415736}
==========

[commit-bot: I haz the power, 2016-08-31 20:17:34]

Patchset 1 (id:??) landed as
https://crrev.com/792954ab4f88e8c4881a6f686aedb7de4d4bf1f6
Cr-Commit-Position: refs/heads/master@{#415736}