https://www.mozilla.org/en-US/firefox/fx/#desktop
Problem solved.
But in all seriousness, try clicking the spanner -> about Google Chrome, and try checking if it's up to date. It may be that the theme you were using is incompatible (it happens).
Also on my version, spanner -> Settings gives me an option to determine what the browser does when it loads. it's currently set to 'open the 'new tab' page'. You should check on that.
Else, adware, and you'll probably need to reinstall the thing.
But seriously. Firefox. >_>
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