We want to add two new types of add-on that supply a CDM plugin or a media decoder plugin to Gecko. These would be similar to dictionary add-ons, in that they would include only metadata (install.rdf) and the actual library - glue to register the library with Gecko will be handled by a bootstrap file provided by XPIProvider (just like SpellCheckDictionaryBootstrap.js). Additionally, a standard list of these plugins should be available in about:addons for one-click download and install. This fits in nicely with the concept of "advertised available installs" I've been thinking about.

"one-click" isn't quite right here. These add-ons should both be auto-downloaded by Firefox upon install.

I'm currently breaking down the work for openh264. Since that is public, let's please decide on openh264 in bug 1009816 and leave this a private bug about CDM plugins. The UI and requirements for a CDM are different anyway.

This is an ancient WiP for my original plan. Never attached to a bug, because EME was a bit too hush-hush at the time. It follows the plan described in bug 1009909 comment 20 and bug 1009816 comment 21. It would be dependant on bug 985380.