[Bug 1055270] [KK Only][Flame][Camera] Face detection coordinates are in...

...verted
I think there might be a simpler way to write rotateArea that avoids the problem of swapping X and Y twice.  Do you think this would work?
```
function rotateArea(area, sensorOrientation) {
  var rotatedTopLeft = rotateCoordinates(area.left, area.top, sensorOrientation);
  var rotatedBottomRight = rotateCoordinates(area.right, area.bottom, sensorOrientation);
  return {
    top: Math.min(rotatedTopLeft.y, rotatedBottomRight.y),
    left: Math.min(rotatedTopLeft.x, rotatedBottomRight.x),
    bottom: Math.max(rotatedTopLeft.y, rotatedBottomRight.y),
    right: Math.max(rotatedTopLeft.x, rotatedBottomRight.x),
    width: Max.abs(rotatedTopLeft.x - rotatedBottomRight.x),
    height: Math.abs(rotatedTopLeft.y - rotatedBottomRight.y)
  };
}
```