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

========

https://hg.mozilla.org/integration/gaia-central/rev/cd25e6363bb5
Author: Rick Waldron <waldron.rick@gmail.com>
Desc: Fix merge conflict from Bug 880628

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "c050031e72dc13c44fcf97c32999f8f95d69a4fb", 
+    "revision": "cd25e6363bb5390cb927d8f75f01fbe8e20b32c2", 
     "repo_path": "/integration/gaia-central"
 }