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

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https://hg.mozilla.org/integration/gaia-central/rev/19678f97e3e3
Author: punamdahiya <punamdahiya@yahoo.com>
Desc: Merge pull request #18864 from punamdahiya/Bug968061

Bug968061 - [NFC][Gallery][Video] - Prevent the NFC pairing for info view and confirm delete dialog r=johnhu

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https://hg.mozilla.org/integration/gaia-central/rev/79ae58d599d3
Author: Punam Dahiya <punamdahiya@yahoo.com>
Desc: Bug968061 - [NFC][Gallery][Video] - Prevent the NFC pairing for info view and confirm delete dialog r=johnhu

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "eb43d48668b0ca398af503223ea42d3ffbf6c430", 
+    "revision": "19678f97e3e332f1f40603a4deb4ad999a3ed08f", 
     "repo_path": "/integration/gaia-central"
 }