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

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https://hg.mozilla.org/integration/gaia-central/rev/3376c0645ebd
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #16370 from Rik/dsds-notification-965853

Bug 965853 - Display SIM indication in missed call notification r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/9212080ca7cd
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Bug 965853 - Display SIM indication in missed call notification

Refactored mock_call to handle several handlers for one event type
Moved a few files to jshint linting

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "766782d40fc2305d46836e0958d7378d5d3ba831", 
+    "revision": "3376c0645ebdef293ad4190e59c775174252dfe7", 
     "repo_path": "/integration/gaia-central"
 }