tree 33c20c832cf07556ca8d0d3c114489c95190a3f0
parent e40e77b34f6521d3caaa8eb49b9e073258e91f56
author Sunny Goyal <sunnygoyal@google.com> 1438032967 -0700
committer Sunny Goyal <sunnygoyal@google.com> 1438369413 -0700

Homescreen migration from a larger grid to a smaller grid.

Adding support for restoring from a larger device, if the grid size
difference is not more that 1.
During restore add all the items in the DB, and run a one-time migration
the next time launcher starts.

The migration strategy is defined in ShrinkWorkspaceTask.java which involves
resizing, moving and removing some items.

Change-Id: I6ee411f6db5bf0152b527e16146a88c56dec2d97