Merge #4904

4904:  GeckoView update (nightly) (20191031-142454) r=Amejia481 a=MickeyMoz
Co-authored-by: MickeyMoz <sebastian@mozilla.com>

buildSrc/src/main/java/Gecko.kt

@@ -6,7 +6,7 @@ internal object GeckoVersions {
     /**
      * GeckoView Nightly Version.
      */
-    const val nightly_version = "72.0.20191030050308"
+    const val nightly_version = "72.0.20191031095309"
 
     /**
      * GeckoView Beta Version.