Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/defc909e21cb
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #16330 from KevinGrandon/bug_952415_search_deduplication

Bug 952415 - [Rocketbar] Duplicate results should not appear

========

https://hg.mozilla.org/integration/gaia-central/rev/ed55d269f906
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 952415 - [Rocketbar] Duplicate results should not appear.

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "2927b8897b18e3d701db9de7a7a83ee254be1a95", 
+    "revision": "defc909e21cbf97412232d8807645835b89dd256", 
     "repo_path": "/integration/gaia-central"
 }