Re-add lockscreen music controls toggle.

Change-Id: I70fb6c0d20caad7af01a45b4a9374eb107a554a3
Fix Google Now animation.

Change-Id: I32efb2eb6dde3e1b45f4a7dd708003a85cfcc78b
Fix hidden navigation bar in expanded desktop mode not being correctly
reflected.

Change-Id: Ie40951c0787d3960a8e6e3b94544632f7633a376
Upstream changes from remote-tracking branch 'upstream/cm-10.2' into cm-10.2
Merge "Re-add lockscreen music controls toggle." into cm-10.2
Merge "Fix Google Now animation." into cm-10.2
Merge remote-tracking branch 'upstream/cm-10.2' into cm-10.2