Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/c60c10d1bd4c
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #11898 from huchengtw-moz/video/Bug_908380_group_videos_in_gallery_view_by_date

Bug 908380 - [Video] - Group videos in gallery view by date, r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/44a0851ef69e
Author: John Hu <johu@mozilla.com>
Desc: Bug 908380 - [Video] - Group videos in gallery view by date

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "d13a1a4b333a0e2c8828da3934c003993caa356c", 
+    "revision": "c60c10d1bd4c8a79043de2beaa841a4d2333c08e", 
     "repo_path": "/integration/gaia-central"
 }