Remove safe_browsing=2 functionality, replace with =3 mode.

Remove safe_browsing=2 functionality, replace with =3 mode.

Remove refs to SAFE_BROWSING_SERVICE, MOBILE_SAFE_BROWSING,
and removes the half-dead code that supported
FULL_SAFE_BROWSING on Android.

This affects no change in functionality.

BUG=542795
Committed: https://crrev.com/00a64f18a8e513fce349820231e10786c2709828
Cr-Commit-Position: refs/heads/master@{#354535}

[Nathan Parker, 2015-10-15 00:37:42]

nparker@chromium.org changed reviewers:
+ mattm@chromium.org, scottmg@chromium.org, thestig@chromium.org

[scottmg, 2015-10-15 16:29:44]

build/ lgtm

[mattm, 2015-10-16 02:38:49]

lgtm

[Lei Zhang, 2015-10-16 02:47:21]

lgtm

You still need a histograms.xml reviewer.

[Nathan Parker, 2015-10-16 02:52:20]

nparker@chromium.org changed reviewers:
+ asvitkine@chromium.org, jorgelo@chromium.org

[Nathan Parker, 2015-10-16 02:52:21]

asvitkine@chromium.org: Please review changes in 
  histograms.xml

jorgelo@chromium.org: Please review changes in 
  chrome/common/safe_browsing/safebrowsing_messages.h

Thanks!

[Nathan Parker, 2015-10-16 02:52:23]

asvitkine@chromium.org: Please review changes in 
  histograms.xml

jorgelo@chromium.org: Please review changes in 
  chrome/common/safe_browsing/safebrowsing_messages.h

Thanks!

[Jorge Lucangeli Obes, 2015-10-16 04:30:49]

On 2015/10/16 02:52:23, nparker wrote:
> mailto:asvitkine@chromium.org: Please review changes in 
>   histograms.xml
> 
> mailto:jorgelo@chromium.org: Please review changes in 
>   chrome/common/safe_browsing/safebrowsing_messages.h
> 
> Thanks!

chrome/common/safe_browsing/safebrowsing_messages.h lgtm

[Alexei Svitkine (slow), 2015-10-16 15:05:20]

lgtm

[Nathan Parker, 2015-10-16 15:42:00]

The CQ bit was checked by nparker@chromium.org

[commit-bot: I haz the power, 2015-10-16 15:42:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1402783005/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1402783005/80001

[commit-bot: I haz the power, 2015-10-16 17:34:41]

Committed patchset #5 (id:80001)

[commit-bot: I haz the power, 2015-10-16 17:35:40]

Patchset 5 (id:??) landed as
https://crrev.com/00a64f18a8e513fce349820231e10786c2709828
Cr-Commit-Position: refs/heads/master@{#354535}