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

========

https://hg.mozilla.org/integration/gaia-central/rev/63f7cdbe7785
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #22447 from vingtetun/progress.misplaced

Bug 1047822 - Loading indicator is misplaced. r=me

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https://hg.mozilla.org/integration/gaia-central/rev/3862f266b632
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1047822 - Loading indicator is misplaced. r=me

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "e49041703c305369304a4033d0a589e2b56b302d", 
+    "revision": "63f7cdbe77850fe5992649b500313224e5ae2943", 
     "repo_path": "/integration/gaia-central"
 }