Google Web Services is not a database, Its like lets say you pick a string and hit to the google and it will return a page, now page is in HTML , I donot think Rest connector convert a HTML page to Json or XML and convert into a structural format.Rest brings data from a web database where proper structure defines.
Once you added lets say Rohit in the connection then need to change Rohit to Martin into the parameter on rest connector then it will hit the web and bring something, So again it is not what you are looking.
Please explain your exact use case so I can find any solution for you.
You can use Google API explorer and OAuth 2.0 authorization a but it will ask you to pass all the parameter again after 30 min. In my mentioned thread you can find one person written a code which will create token and session but again but it is very complex and only who knows the API coding can do and main point here is ,what it pull up is not on which you can make visualization.
My suggestion is use QV Source please for trial and see if you will met your expectation if not please let me know.
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