291576ec6f
Keyboard and button brightness are always set to assign values immediately but were being passed through the animation process anyways. This interfered with the state of the screen brightness animation. Intercept keyboard and button brightness directives and implement them immediately. Also use actual screen brightness and value to determine when we are dimming or brightening. Previously we were using the sensor values to determine whether the action called for was to brighten or dim. This looks at the actual screen brightness level to make that determination. If the two values get out of sync it is better to rely on the screen value than the sensor value. Fixes bug 6626681. Change-Id: I82158f5188ffb739e01f818ba88e79f03a405c58