Google and Samsung are the companies which have made Android great, but they often have an uneasy relationship with one another, and this was highlighted this week when they both launched their software development platforms for wearables. For both giants, wearables such as smartwatches are not ends in their own right, but early test products with which to experiment with new user experiences. All this investment certainly won’t be justified by the sales of incremental and innately unnecessary gadgets like watches, but it will lay the foundations for broader platforms, encompassing far more significant form factors, and the internet of things, in future. The two companies have different agendas ‘ Samsung wants to work out which device shapes and sizes…