Revert "Revert "Renaming TaskbarController to LauncherTaskbarUIC..."

Revert submission 14664190

Reason for revert: Errorprone fixed in ag/14667108
Reverted Changes:
Icd1ddd43e:Revert "Renaming TaskbarController to LauncherTask...
I465013697:Revert "Moving taskbar lifecycle to TouchInteracti...

Change-Id: I1dcccb43d8206830e2b7c1974e775c94ac8c542f
Bug: 187353581
7 files changed