You are requesting a pornograhpic blocker that would require advanced image analyzing AI as well as chrome-compatible programming and a feature that works like a parental lock. I do not have the capacity to create this, and it would be a huge project even for experienced programmers. 

An easier alternative would be to create a new account or switch browsers, to create a blank slate that doesn't remember how you reacted to such content in the past. You could also install an addblocker and an extension which blocks certain websites of your choosing. This will remove the majority of images you didn't search for from ever appearing on your screen. 

Pornography is often harmfull and distracting. It is great to recognize this and set boundaries for oneself.
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