Plugin fingerprint protection was removed 3 years ago by a poorly-reasoned patch, favoring the large bug of unimpeded surveillance over the very tiny bug of sites looping through non-existent lists if and only if they need to interact with a plugin. Seeing the conversation, I'm looking for a different browser.

"remove_plugins-enumerable_names.patch

Bug 757726 hid most plugins from navigator.plugins enumeration to reduce fingerprinting. Plugin detection scripts could ask for a plugin or MIME type by name, but they couldn't get a list of all installed plugins. Unfortunately, the feature had to be disabled because it broke pretty much all plugin detection scripts because they naively search for the desired plugin using an O(n) loop instead of a O(1) query.

This patch removes the disabled code because it is unlikely we could ever re-enable it. In addition to removing the obsolete navigator.plugin tests for detecting hidden plugins, it adds tests for detecting click-to-play and disabled plugins."