To enable this, do the following:
- Select Options (the 3 vertical dots icon on the top right) | More Tools | Developer Tools.
The Developer Tools pane appears.
- Now, do a mouse-right click on the Reload Page icon, as shown in the screenshot below.
A popup menu appears.
- Choose Empty Cache and Hard Reload.
The cache is cleared and any any changes made to the code is reflected in the reloaded page.