Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/bac2fb2602ee
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #22872 from flodolo/bug1053669

Bug 1053669 - [Settings] Add missing strings in properties file

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https://hg.mozilla.org/integration/gaia-central/rev/84f5d8eac0b7
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 1053669 - [Settings] Add missing strings in properties file

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https://hg.mozilla.org/integration/gaia-central/rev/d35773484325
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #22330 from walac/master

Bug 1044297 - Update memory performance tests to use new moz-app-loaded ...

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https://hg.mozilla.org/integration/gaia-central/rev/f0ae145da544
Author: Wander Lairson Costa <wcosta@mozilla.com>
Desc: Bug 1044297 - Update mem perf tests to use new moz-app-loaded event.

After moz-app-loaded event, application has displayed content and ready
for interation. At this point, we should check for memory consumption
regressions.

Apps that implement new startup events don't need to run startup_tests
test. We check if the running app is not in the white list, if it does,
we skip the test.

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https://hg.mozilla.org/integration/gaia-central/rev/3b74aa2d731d
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #22789 from tauzen/Bug1037337-clean_up_only

Bug 1037337 - [NFC] NfcManager cleanup, add jsdoc, add missing unit tests etc., r=gweng

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https://hg.mozilla.org/integration/gaia-central/rev/db07d219ff41
Author: Krzysztof Mioduszewski <kmioduszewski@gmail.com>
Desc: Bug 1037337 - [NFC] NfcManager cleanup, add jsdoc, add missing unit tests etc.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "3020523f9c74816fa77f937f5339b7720dfb8384", 
+    "revision": "bac2fb2602ee0612a28c8748c23ab390471ac9ec", 
     "repo_path": "/integration/gaia-central"
 }