A logo is pictured at Google's European Engineering Center in ZurichBy Foo Yun Chee BRUSSELS (Reuters) – U.S. law firm and class action specialist Hausfeld launched a platform on Tuesday to help pursue claims against Google, posing a potential headache for the world’s No. 1 Internet search engine amid its regulatory troubles in Europe. Hausfeld has coordinated various high-profile class action cases, including for companies affected by an air cargo pricing cartel, investors impacted by currency-rigging by banks and firms fighting fees levied by MasterCard and Visa Europe. The law firm said the Google Redress & Integrity Platform (GRIP) is aimed at those affected by alleged anti-competitive behavior by Google in Europe.