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

========

https://hg.mozilla.org/integration/gaia-central/rev/a8674008468e
Author: Evyatar Amitay <evyatron@gmail.com>
Desc: Revert "[Bug 944026] Make sure installed apps are the native size [r=amirn]"

This reverts commit ea7938ee280423f1b8523661be0c8ccc01f9eeb3.

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "cf23b263b4bbf1024210350f24c7e6eb5872a4be", 
+    "revision": "a8674008468e815eda97b9501862f721e4ba4df7", 
     "repo_path": "/integration/gaia-central"
 }