And it's still being used. The Samsung overlay for the default Android browser includes several feature changes derived from the older work on their own browser. Including a very different tab switcher which is just a more standard evolution (e.g. pagination dots moved to the bottom, with numbers inside them) of the designs I led for them three years earlier.
As Samsung continues to iterate on their designs, some versions of the Samsung skinned browser are changing more radically, but still keep some of the fundamental features, such as the close button shape and placement.