Revert of Create a new AccountTrackerService

Revert of Create a new AccountTrackerService (patchset #8 of https://codereview.chromium.org/425823002/)

Reason for revert:
Likely causing chrome.browser.signin.OAuth2TokenServiceIntegrationTest failures on Android.

TBR=rogerta@chromium.org
NOTREECHECKS=true
NOTRY=true

Original issue's description:
> Create a new AccountTrackerService PKS based on the existing AccountTracker.
> 
> This CL is one part of the effort to change chrome to use gaiaid instead of
> email address as the unique id for an account.
> 
> BUG=341408
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=291263

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=291335

[Lei Zhang, 2014-08-22 05:30:11]

Created Revert of Create a new AccountTrackerService

[commit-bot: I haz the power, 2014-08-22 05:31:48]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/thestig@chromium.org/490403002/1

[commit-bot: I haz the power, 2014-08-22 05:31:48]

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

[commit-bot: I haz the power, 2014-08-22 05:31:50]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Lei Zhang, 2014-08-22 05:33:57]

The CQ bit was checked by thestig@chromium.org

[jabdelmalek, 2014-08-22 05:34:09]

The CQ bit was unchecked by jabdelmalek@google.com

[Lei Zhang, 2014-08-22 05:34:10]

The CQ bit was unchecked by thestig@chromium.org

[Lei Zhang, 2014-08-22 05:35:09]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2014-08-22 05:36:32]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/thestig@chromium.org/490403002/1

[commit-bot: I haz the power, 2014-08-22 05:38:10]

Committed patchset #1 (1) as 291335