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

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https://hg.mozilla.org/integration/gaia-central/rev/3a2f49b4c398
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #16194 from snowmantw/issue971423

Bug 971423 - [LockScreen] Notifications and music widget behind the passcode pad

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https://hg.mozilla.org/integration/gaia-central/rev/00a2e05b223f
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 971423 - [LockScreen] Notifications and music widget behind the passcode pad

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "877751e7823fbeb2dd35d91eb0a3ad0b63b49b89", 
+    "revision": "3a2f49b4c398bb152b2475b1261de7b6f2f35d4b", 
     "repo_path": "/integration/gaia-central"
 }