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

========

https://hg.mozilla.org/integration/gaia-central/rev/f19bde8a79d3
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #13342 from RudyLu/settings/Bug913784-language_keyboard_mapping

Bug 913784 - Language selection should also enable associated built-in
r=gnarf, arthur

========

https://hg.mozilla.org/integration/gaia-central/rev/9323e284eb81
Author: Rudy Lu <me@rudy.lu>
Desc: Bug 913784 - Language selection should also enable associated built-in
keyboard layout(s).
 - handle default layouts resetting
 - add unit test for changeDefaultLayouts

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "87c41a9538b01b00789b555c59ecae0908587310", 
+    "revision": "f19bde8a79d3d568800238ca2e1e3e3754328b65", 
     "repo_path": "/integration/gaia-central"
 }