Drop struct BootStat and all usage (boot stats are now sent from chromeos code).

Drop struct BootStat and all usage (boot stats are now sent from chromeos code).

BUG=141757
As far as I see, after migrating 

BootTime.Total                                                                   
BootTime.Firmware                                                                
BootTime.Kernel                                                                  
BootTime.System                                                                  
BootTime.Chrome

to chromeos, struct chromeos::BootTimesLoader::BootTimes becomes empty. So I've dropped it completely and all references to it.


Probably class BootTimesLoader  should also be renamed as it doesn't load any times anymore, but instead reports time marks.


Please review.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=217006

[Alexander Alekseev, 2013-08-08 17:06:55]

Please review.

[Alexander Alekseev, 2013-08-08 17:07:55]

Chromeos patch here:

https://gerrit.chromium.org/gerrit/#/c/63603/

[DaveMoore, 2013-08-08 18:46:54]

lgtm

[Nikita (slow), 2013-08-09 15:53:50]

lgtm

[commit-bot: I haz the power, 2013-08-09 15:54:08]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/alemate@chromium.org/22262004/1

[commit-bot: I haz the power, 2013-08-09 23:28:28]

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

[commit-bot: I haz the power, 2013-08-12 10:50:32]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/alemate@chromium.org/22262004/1

[commit-bot: I haz the power, 2013-08-12 16:17:30]

Change committed as 217006