Merge "Widgets tray should preserve scroll position during screen rotation" into ub-launcher3-calgary
am: adb8eb5a34

* commit 'adb8eb5a34ea3a31e4ac062e18aebb939e1f7567':
  Widgets tray should preserve scroll position during screen rotation

Change-Id: I98695e133b76492d909a2ab1b0de90a49772df2a