If you choose the Tools menu, Build System, New Build System and create this:
"cmd": "C:\\Users\\Andrew\\AppData\\Local\\Google\\Chrome\\Application\\chrome.exe", "$file"]
Save this file using the extension 'sublime-build' in your User folder. This opens the displayed page in whichever browser you identify. ($file means the current file.)
Then you can run it by choosing Tools, Build System 'YourNewBuild'. After you've used it once. then pressing Ctrl-B should in future cause it to run your build.
I haven't worked out yet how to assign it to some other shortcut key - perhaps it needs to be converted to a macro or command?