Look into xposed and xprivacy frameworks
From #tor-dev: "jjweiss: it doesn't really matter what browser you use on android. You still have to use xposed & XPrivacy to prevent it from reading identifying information like the serial number and android ID in the first place"
"what I'm saying is that some of the issues affecting the browsers can actually be fixed via lib stubs/shims/adapters on some (most?) OSes"