Google warned on Tuesday it will not hesitate to <A HREF="http://news.zdnet.com/2100-9588_22-6090490.html?tag=zdnn.alert">file antitrust complaints</A> in the United States if high-speed Internet providers abuse the market power they could receive from U.S. legislators. The U.S. Senate Commerce Committee last week approved sweeping communications reform legislation that would make it easier for telephone companies like AT&T to offer subscription television to consumers. But it narrowly rejected attempts by some lawmakers to strengthen safeguards on Internet service, which had pitted high-speed Internet, or broadband, providers such as AT&T against Internet content companies like Google. The battle centered on whether broadband providers can charge more to carry unaffiliated content or to guarantee service quality, an issue called Net neutrality.