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

========

https://hg.mozilla.org/integration/gaia-central/rev/62174f4b532c
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #17364 from gasolin/bubble974828

Bug 974828 - [Settings][dsds] Outgoing data confirmation is wrong, r=arthur

========

https://hg.mozilla.org/integration/gaia-central/rev/764627827d38
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 974828 - [Settings][dsds] Outgoing data confirmation is wrong

- update test
- change the way about how we show confirm window

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "branch": "", 
         "revision": ""
     }, 
-    "revision": "e796d45a31d0df5abd9ef93669cf1d8e176b73f4", 
+    "revision": "62174f4b532c0127dc9595dd79df25e6ffdf7c59", 
     "repo_path": "/integration/gaia-central"
 }