I'm running Chrome on Win7 OS. I don't know how DDG found its way onto my computer but it did and I can't delete it. I've checked programs to uninstall and it's not there to remove. I've checked default search engines under settings and it's not listed. Every time I try to use google, DDF hijacks the webpage. How do I remove it? Or, at least, give me the option to select it rather than unilaterally requiring me to do so?