Comment 1 for bug 1334231

I added a couple of debugging lines in u-c-c-signon, and here's the result:

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unity-control-center -v credentials -- application=shotwell
(unity-control-center:27615): credentials-cc-panel-DEBUG: Loaded
(unity-control-center:27615): Gtk-DEBUG: Connecting to session manager
** (unity-control-center:27615): DEBUG: Enabling debugging
** (unity-control-center:27615): DEBUG: Extra argument: application=shotwell
(unity-control-center:27615): credentials-cc-panel-DEBUG: cc-credentials-preferences.vala:107: no params
credentials-cc-panel-Message: cc-credentials-accounts-model.vala:259: Error loading icon 'vimeo': Icon 'vimeo' not present in theme
credentials-cc-panel-Message: cc-credentials-providers-model.vala:109: No desktop app info found for application name: com.ubuntu.developer.webapps.webapp-facebook_webapp-facebook
credentials-cc-panel-Message: cc-credentials-providers-model.vala:109: No desktop app info found for application name: uoa-integration-tests
credentials-cc-panel-Message: cc-credentials-providers-model.vala:109: No desktop app info found for application name: com.ubuntu.developer.knitzsche.oa-2_oa-2
credentials-cc-panel-Message: cc-credentials-providers-model.vala:109: No desktop app info found for application name: it.mardy.account-tester_account-tester
credentials-cc-panel-Message: cc-credentials-providers-model.vala:109: No desktop app info found for application name: com.ubuntu.reminders_reminders
(unity-control-center:27615): credentials-cc-panel-DEBUG: cc-credentials-account-details-page.vala:239: No configuration widget for provider windows-live
(unity-control-center:27615): credentials-cc-panel-DEBUG: Startup argument given: application=shotwell
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It looks like our plugin is "constructed" and *then* the "argv" property is set. Our code assumes that this is a construct property.
I'm not sure whether this assumption is correct, but since this used to work, it's very likely that something changed in u-c-c.