Revert of Punt touch UGI deprecation to M56

Revert of Punt touch UGI deprecation to M56 (patchset #1 id:1 of https://codereview.chromium.org/2412423003/ )

Reason for revert:
This patch breaks compile on the branch, since the "M55" enum value is still used with dopplerWillBeRemoved (note that https://chromium.googlesource.com/chromium/src/+/9848564877f0057f4dcbc98bce061dfa17a9202c removes dopplerWillBeRemoved on master, but that patch is not on the branch)

Original issue's description:
> Punt touch UGI deprecation to M56
> 
> BUG=654978
> 
> Review-Url: https://codereview.chromium.org/2408203004
> Cr-Commit-Position: refs/heads/master@{#424739}
> (cherry picked from commit 5228ba9c95482de8e3615f189bcf822806e99010)
> 
> Committed: https://chromium.googlesource.com/chromium/src/+/33d95c3c0e29e1263bd81aacbbaa15906abdd278

TBR=rbyers@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=654978

[johnme, 2016-10-14 14:09:40]

The CQ bit was checked by johnme@chromium.org

[johnme, 2016-10-14 14:09:40]

Created Revert of Punt touch UGI deprecation to M56

[commit-bot: I haz the power, 2016-10-14 14:09:52]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-14 14:12:43]

Committed patchset #1 (id:1)