Change Chromium default product name and icon for Mac

From chromium source,  /src/chrome/app is the location for Chrome's icon, product name, and some other resources.

and there's default theme on chrome/app/theme/.  

and the product name(Chromium) lives in chrome/app/chromium_strings.grd

let's change it and see the result.

https://codereview.chromium.org/1781673003 here's my change. 

You can see the product name is changed to 'Nike' and icon is canary(original icon should be blue background)

Check : https://codereview.chromium.org/136243002