[Chromoting] Remove Iceberg files and support.

[Chromoting] Remove Iceberg files and support.

Iceberg was our old .pkg maker, but we've switched to using Packages since it
supports building flat installers that can be signed (required by 10.8).
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=156334

[garykac, 2012-09-12 00:48:27]

+joth, +steveblock, +torne

(Although frankly it's a bit bizarre to require android approval to clean up
deprecated files - it seems like this should be a warning rather than a trybot
breakage.)

[Jamie, 2012-09-12 01:34:45]

lgtm

[joth, 2012-09-12 05:43:29]

lgtm