(Reuters) - Chinese search engine giant Baidu Inc forecast second-quarter revenue above expectations after beating earnings estimates, as the world's second-largest economy reopens after lockdowns imposed to curb the spread of the coronavirus. The company's U.S.-listed shares were up 5% in extended trading on Monday."With the pandemic coming under control in China, offline activities are rebounding and Baidu stands to benefit from a restart of the Chinese economy," Chief Executive Officer Robin..