Weird Buttons In Google Search Engine Result Page

Does anyone know this stuff/buttons?

Because of the buttons my rank in Busby SEO Test elevated to the first rank on the first page of Google SERP. Currently, my blog is on the 4th page and in the 38th rank. But all of sudden, and of course magically after I clicked the up button, then here’s what my screen tells me:

You see? I am on the first page and taken the lead for keyphrase Busby SEO Test, which means I am temporary winner…lol. But of course that’s not what happen. It’s just the magical effect that the buttons have caused to my rank, and I have no idea what did I do to make the buttons appear, I forgot what did I click in my browser for which the button came to appear.

And one more thing, the weird buttons don’t appear if I don’t log in to Google account. Which means after I log-in to any Google products such gmail, webmaster or any other Google products and then I start searching for any information, the buttons will be appearing in Google Search Engine Result Page (s).

After the result came up on my screen I have a total control on which blog should be on top and which should be on the lower rank, I could also remove on blog that I regard not worth appearing on my screen by clicking the “remove” button.

Now I am able to compile my own list of whose blog should be in the 1st rank and whose blog should be in the 2nd rank of Google SERP, all is depending me. And of course it only works and can be seen from my own browser. Not bad, eh?

May be it’s because add-ons I accidentally downloaded but there’s nothing new bar in the add-ons list, the list still showing the same downloaded add-ons like before. What did I do? Anyone can tell me what’s the phenomena that I experience now?