A possible example of this is how the 'Clear Browsing Data' button in chrome for android has been moved to an inconspicious location away from the other settings, if you have an android device i invite you to see how easily you can find it without looking it up.
Chrome is a web browser created (largely) by Google. Google makes their money (largely) from web advertising. Web advertising is far more effective if you can use things like cookies to decide what ads to show to people.
So the claim is that Google has an incentive to make it harder to clear local browsing data than if they just considered it from the perspective of what users would want.
