You can achieve this using Google Chrome
Pop open the Developer panel (F12), and in the bottom section of the console choose
Sensors. In the Location sensor, choose an alternate location. If you don’t see the Console, press Esc, or click the
. menu and choose
Show console drawer.
To add/edit locations, click
Now when I search for my location, I see a result based on my Sensor value.
For reference, I’m not in Tokyo.