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

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https://hg.mozilla.org/integration/gaia-central/rev/f3798cf6c29f
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #19907 from etiennesegonzac/bug-1018590

Bug 1018590 - Properly remove the input focus when hiding the keyboard. r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/2efc011a6fc6
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1018590 - Properly remove the input focus when hiding the keyboard.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "5587b100d685f06200f3562984189163338e7845", 
+    "revision": "f3798cf6c29f5845878fc6c02af58c1f8e470415", 
     "repo_path": "/integration/gaia-central"
 }