perf: Don't persist the perf profile across a reboot

 * Always initialize with the default performance profile.
 * There are a lot of reasons for this, but mostly because
   users are stumbling into the setting and ending up with a
   slow system because they enabled powersave mode.

Change-Id: Icd0a1ddcc41700eb29a126bda1eb67a26fc2d5dd
perf: Send a boost hint when a key on the navbar is pressed

 * A lot of stuff happens, especially when invoking recents.
 * Get ahead of the storm by sending a boost hint before
   kicking off the animations.

Change-Id: I0cecd0c58f8bc8479ea44f63af796500d7b9d7d2
Animate circle battery rotation back to 0 after unplugging

After unplugging continue the rotation animation until it's back at 0
instead of jumping to it directly.

Change-Id: Ifea8351d609c0dc4ec82bd459942a197243dd5f1
Fix resource leaks

Change-Id: I3a201cfd924e467d605351782bd06874c2af725e
Fix hiding ADB notification

When the notification is already shown (the device is connected in ADB mode)
and the user turns it off, it doesn't go away. Let's hide it properly.

Change-Id: Ie411a89d5549ae9662c59ee9ee5d18a9568e1ede