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

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https://hg.mozilla.org/integration/gaia-central/rev/b3e4bc16766f
Author: Zibi Braniecki <zbigniew.braniecki@gmail.com>
Desc: Merge pull request #22408 from zbraniecki/1047344-clean-up-mozl10n-api-in-browser

Bug 1047344 - Clean up mozL10n API use in Browser. r=dale

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https://hg.mozilla.org/integration/gaia-central/rev/1b347cb38aa0
Author: Zbigniew Braniecki <gandalf@mozilla.com>
Desc: Bug 1047344 - Clean up mozL10n API use in Browser

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "a8c76559e27e17cc1cb8ad1c78037f6999cca8aa", 
+    "revision": "b3e4bc16766fc701b06f06fe874bc270fb4fdfa7", 
     "repo_path": "/integration/gaia-central"
 }