Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/6231a27ef131
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #22264 from gasolin/issue-1032651

Bug 1032651 - [Gaia] CMAS on/off toggle in Settings, r=arthur

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https://hg.mozilla.org/integration/gaia-central/rev/363168ab810f
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1032651 - [Gaia] CMAS on/off toggle in Settings

- Two toggles, CB and CMAS
- when CB off, CMAS is also off and disabled
- When CB on, user can turn on/off the CMAS
- When CB on, CMAS state will be retained to the state before CB off.
- add marionette test
- make CMAS totally count on CBS

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https://hg.mozilla.org/integration/gaia-central/rev/7fe262883a63
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #22509 from RudyLu/iGormilhit-master

Bug 1046836 - Add the Swiss-french layout.
r=rudylu.

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https://hg.mozilla.org/integration/gaia-central/rev/4fd95782c475
Author: iGor milhit <igormilhit@mailoo.org>
Desc: Bug 1046836 - Add the Swiss-french layout.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "75b0b4bbb2c664d329643e54e38def51c780035a", 
+    "revision": "6231a27ef1318744bfcbfafaf15bc2892abbafdc", 
     "repo_path": "/integration/gaia-central"
 }