Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/4262bf9de7fc
Author: Gabriele Svelto <gsvelto@mozilla.com>
Desc: Bug 1016885 - Always initialize the MmiManager before sending a notification r=etienne

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "9d97cdea7f36ac6c0d82c10cc39ecd832fd665f8", 
+    "revision": "4262bf9de7fc4fdb951c5210c1405d7ba29ca6c3", 
     "repo_path": "/integration/gaia-central"
 }