SmoothProgressBar: Accelerate and Interpolator [2/2]
PS1 : reformat the code
PS2 : change method

Signed-off-by: hany <hany.alsamman@gmail.com>
Signed-off-by: scott <scott@ubuntu>
SmoothProgressBar: Add reset option
Fixup progressbar from cherry-picks.

Change-Id: I63b5a1bf8d959cae1c6e45224d084e828ffad6b1
Signed-off-by: scott <scott@ubuntu>