* Rename KeyboardActionListener.onPress to onPressKey
* Rename KeyboardActionListener.onRelease to onReleaseKey
* Merge KeyboardSwicther.onPressShift, onPressSymbol, and onPressOtherKey to onPressKey.
* Merge KeyboardSwitcher.onReleaseShift and onReleaseSymbol to onReleaseKey.
* Merge KeyboardState.onPressShift, onPressSymbol, and onPressOtherKey to onPressKey.
* Merge KeyboardState.onReleaseShift and onReleaseSymbol to onReleaseKey.
Change-Id: Icf28fd18e238c5e534c292893e4ab5b6b98e72f8