Chrome/Chromium Browser
Hidden Settings
Type chrome://about into you address bar at the top to get a list of all internal pages in Chrome or Chromium browsers. These pages give you a lot of additional configurations, developer options, and information. Many of the hidden configurations can break things, so be careful!
The major one is chrome://flags which has a lot of advanced configuration tweaks.
For similar hidden configurations in other browsers, read this article: http://www.howtogeek.com/139736/how-to-change-hidden-advanced-settings-in-any-browser/
Disable Hardware Media Key Handling
With this feature, media that is playing in Chrome will make media controls available to the Operating System, and in Windows 10 this means there will be a media control box that display on the desktop and even on the lock screen.
To disable it, go to this link, set it to disabled, and reload Chrome: chrome://flags/#hardware-media-key-handling