A Google executive boasted to co-workers  the goal for the company’s budding online advertising business in 2009 was to “crush” rivals in the digital ad market, according to evidence presented Wednesday at the blockbuster federal antitrust trial targeting against the tech titan.The Justice Department highlighted remarks made by David Rosenblatt, Google’s former president of display advertising, during the third day of the non-jury trial that alleges Google abused its control of digital market technology to ...