SINGAPORE/TOKYO (Reuters) – Asian shares extended losses on Friday as caution over a U.S. jobs report overshadowed signals from the European Central Bank that it is willing to take further steps to shore up the European economy. U.S. stock futures (ESc1) fell 0.8 percent during the Asian day, pointing to a weaker opening on Wall Street as well after U.S. stocks ended slightly higher overnight. MSCI’s broadest index of Asia-Pacific shares outside Japan fell 0.8 percent, and was on track to end the week down 4.2 percent.