Report data usage UMA for Chrome services

Report data usage UMA for Chrome services

This issue has the same goals as issue 1330443002( It was reverted
because it breaded compile on multiple bots).

data_use_measurement is a component which records the data use of the
services, if a DataUseUserData is attached to their request. Hence to
measure and compare data use of different services, a small change is
needed in the services' code where they create a URLFetcher. After
creating a URLFetcher by a service, a proper tag for that service should
be attached to the request.
Besides the necessary changes in the service, the enum in DataUseUserData
and the function returning the names based on this enum should be updated
for different services too. Also the name of target services should be
added to proper enum and histograms in histograms.xml file.
Lastly the dependency files should be updated accordingly too.

TBR=bartfab@chromium.org,andrewhayden@chromium.org,pkasting@chromium.org,sclittle@chromium.org,thestig@chromium.org,isherman@chromium.org,rouslan@chromium.org,nyquist@chromium.org,bengr@chromium.org,asvltkine@chromium.org,zea@chromium.org,mmenke@chromium.org

BUG=527304
Committed: https://crrev.com/f76ae11f25dc0056cea63e15c16039fdbd5f3470
Cr-Commit-Position: refs/heads/master@{#348645}

[bengr, 2015-09-14 15:30:59]

bengr@chromium.org changed reviewers:
+ bengr@chromium.org

[bengr, 2015-09-14 15:31:13]

lgtm

[amohammadkhan, 2015-09-14 15:32:51]

The CQ bit was checked by amohammadkhan@google.com

[commit-bot: I haz the power, 2015-09-14 15:38:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1336333003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1336333003/1

[commit-bot: I haz the power, 2015-09-14 16:52:16]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-09-14 16:52:18]

Try jobs failed on following builders:
  win_chromium_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[amohammadkhan, 2015-09-14 16:58:28]

The CQ bit was checked by amohammadkhan@google.com

[commit-bot: I haz the power, 2015-09-14 17:00:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1336333003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1336333003/1

[commit-bot: I haz the power, 2015-09-14 17:34:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-14 17:35:31]

Patchset 1 (id:??) landed as
https://crrev.com/f76ae11f25dc0056cea63e15c16039fdbd5f3470
Cr-Commit-Position: refs/heads/master@{#348645}

[commit-bot: I haz the power, 2015-09-23 12:33:41]

Patchset 1 (id:??) landed as
https://crrev.com/f76ae11f25dc0056cea63e15c16039fdbd5f3470
Cr-Commit-Position: refs/heads/master@{#348645}