Disable resource timing API

README.md

@@ -162,6 +162,7 @@ HTML5 / [APIs](https://wiki.mozilla.org/WebAPI) / [DOM](https://en.wikipedia.org
 * Disable gamepad API to prevent USB device enumeration [ [1](https://www.w3.org/TR/gamepad/) [2](https://trac.torproject.org/projects/tor/ticket/13023) ]
 * Disable virtual reality devices APIs [ [1](https://developer.mozilla.org/en-US/Firefox/Releases/36#Interfaces.2FAPIs.2FDOM) [2](https://developer.mozilla.org/en-US/docs/Web/API/WebVR_API) ]
 * Disable vibrator API
+* Disable resource timing API [ [1](https://www.w3.org/TR/resource-timing/#privacy-security) ]
 * Disable webGL [ [1](https://en.wikipedia.org/wiki/WebGL) [2](https://www.contextis.com/resources/blog/webgl-new-dimension-browser-exploitation/) ]
 * When webGL is enabled, use the minimum capability mode
 * When webGL is enabled, disable webGL extensions [ [1](https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API#WebGL_debugging_and_testing) ]

user.js

@@ -157,6 +157,10 @@ user_pref("dom.vr.enabled",					false);
 // PREF: Disable vibrator API
 user_pref("dom.vibrator.enabled",           false);
 
+// PREF: Disable resource timing API
+// https://www.w3.org/TR/resource-timing/#privacy-security
+user_pref("dom.enable_resource_timing",				false);
+
 // PREF: Disable Archive API (Firefox < 54)
 // https://wiki.mozilla.org/WebAPI/ArchiveAPI
 // https://bugzilla.mozilla.org/show_bug.cgi?id=1342361