Fix re-rendering in content scripts in Firefox extensions

There is a problem with Reagent in content scripts in Firefox extensions where
the UI does not update when a ratom changes.

The problem is described here
NoxHarmonium@a9e898c
with Reagent 0.9.0+, though that Reagent fork also has a branch that patches
Reagent 0.8.1. The relevant branches are:
* fix-raf-binding-0.8.1
* fix-raf-binding-0.9.0-rc1
* master (with fix on 0.9.0)

Note the "related links section" of the commit message at the above link: React
issue facebook/react#16606
From what I’ve read, this only seems to affect content scripts in browser
extensions in Firefox.

I have merely applied the fix in the commit at the above link to Reagent 0.10.0.

[#170650669]

src/reagent/impl/batching.cljs

@@ -16,12 +16,11 @@
 (def next-tick
   (if-not is-client
     fake-raf
-    (let [w js/window]
-      (or (.-requestAnimationFrame w)
-          (.-webkitRequestAnimationFrame w)
-          (.-mozRequestAnimationFrame w)
-          (.-msRequestAnimationFrame w)
-          fake-raf))))
+    (or (. (. js/window -requestAnimationFrame) bind js/window)
+        (. (. js/window -webkitRequestAnimationFrame) bind js/window)
+        (. (. js/window -mozRequestAnimationFrame) bind js/window)
+        (. (. js/window -msRequestAnimationFrame) bind js/window)
+        fake-raf)))
 
 (defn compare-mount-order
   [^clj c1 ^clj c2]