问题
After Chrome auto-upgraded itself, the icons for the menu disappeared.
How do I re-enable them?
回答1:
Open developer tools (Ctrl + Shift + I) and in the bottom right you can click on the gear icon to bring up the settings window.
There you can enable icons again.
来源：https://stackoverflow.com/questions/15167087/icons-in-menu-gone-in-chrome-developer-tools-after-update