When dragging an app shortcut, it was possible that we'd show a red rectangle
around a cell occupied by a UserFolder. This shouldn't be possible -- as soon
as that cell becomes the target drop cell, the folder should start handling
the drag and drop events.
Change-Id: I1b7a8b1aa9aeb7e2f1bd51ce8d947c06455e988f
used for the workspace.
Consolidate the three icon resampling functions into one.
Ensure that the icons stored in LauncherProvider are the right size, so we don't have to resample
them each time we load them.
