Set the shelf icon title explicitly for settings and task manager

Set the shelf icon title explicitly for settings and task manager

This allows us to set the icon title (used for hovertext) independently
of the window title (which is empty for Settings windows).

BUG=406954
Committed: https://crrev.com/7de8523b61785562a74ba09e7f8916e1e7c607ee
Cr-Commit-Position: refs/heads/master@{#292029}

[stevenjb, 2014-08-26 19:28:33]

stevenjb@chromium.org changed reviewers:
+ sky@chromium.org

[sky, 2014-08-26 20:37:17]

LGTM

[stevenjb, 2014-08-26 20:40:35]

The CQ bit was checked by stevenjb@chromium.org

[commit-bot: I haz the power, 2014-08-26 20:41:03]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/stevenjb@chromium.org/507003002/1

[commit-bot: I haz the power, 2014-08-26 22:22:23]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_tests_recipe on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_dbg_tes...)

[commit-bot: I haz the power, 2014-08-26 23:33:08]

Committed patchset #1 (1) as 2f88e541b15782e627074def2ca13892e1733aad

[commit-bot: I haz the power, 2014-09-10 02:47:19]

Patchset 1 (id:??) landed as
https://crrev.com/7de8523b61785562a74ba09e7f8916e1e7c607ee
Cr-Commit-Position: refs/heads/master@{#292029}