Comment 0 for bug 676453

Add 'installing' animation for when app is installed via drag & drop.

The desired behavior when a user drags and drops a uninstalled app from the Dash App Lens to the Launcher is:

1) A 'uninstalled' version of the app icon is added to the Launcher.

2) As the app downloads and installs, progress is displayed inside the launcher icon.

3) When the app has finished installing, a Notify OSD notification tells the user that the app is installed. The icon will also 'pulse' once.

The following art assets will be attached to this bug:

1. The uninstalled state
2. The installing progress animation
3. The installation complete 'pulse' animation