base

Redraw all windows earlier in power on sequence.

Send a message to all windows to redraw before notifying
PhoneWindowManager of screen on. This minimizes the delay in
screen update that causes the keyguard clock to display the old time
before displaying the current time.

Fixes bug 6381021.

Change-Id: Ida7071e7dac2284540f101c5d004511b52133b91