Added three histograms to track the following TCP connection latency

Added three histograms to track the following TCP connection latency
intervals.

a) t <= 10ms
b) 10ms < t <= 20ms
c) 20ms < t (or no previous time)

R=jar@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=235652

[ramant (doing other things), 2013-11-13 20:45:55]

Hi Jim,
  This is a first cut at tracking the connection latency intervals for <=10ms,
<= 20ms and the rest. Not sure if I got the names right or not. Would appreciate
if you could take a look. Will add to histograms.xml if the names look ok.

thanks
raman

[jar (doing other things), 2013-11-15 02:48:41]

lgtm  (please add histograms.xml changes)

[ramant (doing other things), 2013-11-15 03:53:21]

Added new histograms to histograms.xml. PTAL. thanks.

[jar (doing other things), 2013-11-15 05:38:15]

LGTM % nits

https://codereview.chromium.org/68793007/diff/50001/tools/metrics/histograms/...
File tools/metrics/histograms/histograms.xml (right):

https://codereview.chromium.org/68793007/diff/50001/tools/metrics/histograms/...
tools/metrics/histograms/histograms.xml:30202: +  <group
name="LessThanOrEqual_10ms" label="less than or equlal to 10ms."/>
nit: typo:   equlal --> equal

https://codereview.chromium.org/68793007/diff/50001/tools/metrics/histograms/...
tools/metrics/histograms/histograms.xml:30203: +  <group
name="LessThanOrEqual_20ms" label="less than or equlal to 20ms."/>
nit: should be:
more than 10ms, and less than or equal to 20ms"

[ramant (doing other things), 2013-11-15 06:37:31]

https://codereview.chromium.org/68793007/diff/50001/tools/metrics/histograms/...
File tools/metrics/histograms/histograms.xml (right):

https://codereview.chromium.org/68793007/diff/50001/tools/metrics/histograms/...
tools/metrics/histograms/histograms.xml:30202: +  <group
name="LessThanOrEqual_10ms" label="less than or equlal to 10ms."/>
On 2013/11/15 05:38:15, jar wrote:
> nit: typo:   equlal --> equal

Done.

https://codereview.chromium.org/68793007/diff/50001/tools/metrics/histograms/...
tools/metrics/histograms/histograms.xml:30203: +  <group
name="LessThanOrEqual_20ms" label="less than or equlal to 20ms."/>
On 2013/11/15 05:38:15, jar wrote:
> nit: should be:
> more than 10ms, and less than or equal to 20ms"

Done.

[commit-bot: I haz the power, 2013-11-15 06:47:19]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rtenneti@chromium.org/68793007/100001

[commit-bot: I haz the power, 2013-11-15 10:05:18]

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

[commit-bot: I haz the power, 2013-11-15 16:04:56]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rtenneti@chromium.org/68793007/100001

[commit-bot: I haz the power, 2013-11-15 22:11:50]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rtenneti@chromium.org/68793007/100001

[commit-bot: I haz the power, 2013-11-16 00:43:25]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rtenneti@chromium.org/68793007/100001

[commit-bot: I haz the power, 2013-11-18 07:59:36]

Change committed as 235652