<a href="http:&#x2F;&#x2F;chrome.blogspot.com&#x2F;2015&#x2F;05&#x2F;new-research-ad-injection-economy.html" rel="nofollow">http:&#x2F;&#x2F;chrome.blogspot.com&#x2F;2015&#x2F;05&#x2F;new-research-ad-injection...</a> describes why such a tool must exist. AFAIUI, the cleanup tool addresses with the many Windows executables that can compromise the core Chrome experience and user profile settings in order to inject bothersome advertisements.<p>A paper on this Ad Injection ecosystem was published last year: <a href="http:&#x2F;&#x2F;research.google.com&#x2F;pubs&#x2F;pub43346.html" rel="nofollow">http:&#x2F;&#x2F;research.google.com&#x2F;pubs&#x2F;pub43346.html</a>