gallery_app.tests.test_photo_viewer.TestPhotoViewer.test_share_button is failing since image #175

This test has been unstable for a long time, but it has failed on every single execution since image #175.

Latest result:
http://ci.ubuntu.com/smokeng/utopic/touch/mako/200:20140819.2:20140811.1/9800/gallery_app/1556521/

test-log: {{{
21:11:33.930 WARNING testcase:115 - No tracing available - install the python-autopilot-trace package!
21:11:33.938 WARNING testcase:162 - Process manager backend unavailable, application snapshot support disabled.
21:11:33.975 DEBUG __init__:217 - Launching gallery-app via click package.
21:11:33.976 INFO _launcher:280 - Attempting to launch click application '(default)' from click package 'com.ubuntu.gallery' and URIs ''
21:11:34.748 INFO _launcher:120 - Attempting to launch application 'com.ubuntu.gallery_gallery_2.9.1.1043' with URIs '' via upstart-app-launch
21:11:43.100 INFO logging:45 - MainScreen: Open a tab. Arguments ('eventsTab',). Keyword arguments: {}.
21:11:43.148 DEBUG dbus:353 - Selecting objects of type Tab with attributes: {}
21:11:43.280 INFO logging:45 - MainScreen: Open a tab. Arguments (1,). Keyword arguments: {}.
21:11:43.369 DEBUG dbus:353 - Selecting objects of type Tab with attributes: {}
21:11:43.450 DEBUG dbus:353 - Selecting objects of type Tab with attributes: {}
21:11:43.646 DEBUG dbus:353 - Selecting objects of type QQuickItem with attributes: {'objectName': 'eventPhoto'}
21:11:43.925 INFO logging:45 - MainScreen: Close the toolbar if it's opened. Arguments (). Keyword arguments: {}.
21:11:43.971 INFO logging:45 - Toolbar: Close the toolbar if it's opened. Arguments (). Keyword arguments: {}.
21:11:44.100 DEBUG _uinput:541 - Dragging from 384,1136 to 384,1279
21:11:46.305 DEBUG dbus:353 - Selecting objects of type QQuickItem with attributes: {'objectName': 'eventPhoto'}
21:11:46.390 DEBUG dbus:353 - Selecting objects of type QQuickImage with attributes: {}
21:11:46.543 DEBUG dbus:353 - Selecting objects of type QQuickImage with attributes: {}
21:11:46.680 DEBUG _common:45 - Moving to object's globalRect coordinates.
21:11:46.681 DEBUG _uinput:470 - Tapping at: 164,528
21:11:51.417 INFO logging:45 - MainScreen: Open the toolbar if it's not already opened. Arguments (). Keyword arguments: {}.
21:11:51.474 INFO logging:45 - Toolbar: Open the toolbar if it's not already opened. Arguments (). Keyword arguments: {}.
21:11:52.617 INFO logging:45 - MainScreen: Open the toolbar if it's not already opened. Arguments (). Keyword arguments: {}.
21:11:52.673 INFO logging:45 - Toolbar: Open the toolbar if it's not already opened. Arguments (). Keyword arguments: {}.
21:11:52.838 DEBUG _common:45 - Moving to object's globalRect coordinates.
21:11:52.839 INFO logging:45 - Toolbar: Open the toolbar if it's not already opened. Arguments (). Keyword arguments: {}.
21:11:52.910 DEBUG _common:45 - Moving to object's globalRect coordinates.
21:11:52.910 DEBUG _uinput:470 - Tapping at: 687,1208
21:12:13.381 DEBUG runtest:172 - Deleting /home/phablet/Pictures
21:12:14.247 DEBUG runtest:172 - Restoring backed up pics to /home/phablet/Pictures
}}}

Traceback (most recent call last):
  File "/home/phablet/autopilot/gallery_app/tests/test_photo_viewer.py", line 119, in test_share_button
    share_picker = self.photo_viewer.get_share_peer_picker()
  File "/home/phablet/autopilot/gallery_app/emulators/photo_viewer.py", line 40, in get_share_peer_picker
    objectName="sharePicker")
  File "/usr/lib/python3/dist-packages/autopilot/introspection/dbus.py", line 296, in wait_select_single
    return self.select_single(type_name, **kwargs)
  File "/usr/lib/python3/dist-packages/autopilot/introspection/dbus.py", line 245, in select_single
    raise StateNotFoundError(type_name_str, **kwargs)
autopilot.exceptions.StateNotFoundError: Object not found with name 'ContentPeerPicker' and properties {'objectName': 'sharePicker'}.

Tips on minimizing the occurrence of this failureare available here:
http://developer.ubuntu.com/api/devel/ubuntu-14.10/python/autopilot/faq/troubleshooting.html