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

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https://hg.mozilla.org/integration/gaia-central/rev/418829c93f09
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #17385 from AndreiH/bug_985927

Bug 985927 - Button locator changed for test_window_open_inside_iframe.T...

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https://hg.mozilla.org/integration/gaia-central/rev/b36e1e1e4b63
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 985927 - Button locator changed for test_window_open_inside_iframe.TestWindowOpenInsideIframe

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "branch": "", 
         "revision": ""
     }, 
-    "revision": "ac70186f8d7e3b87e4a621f34994258c1efbd4e4", 
+    "revision": "418829c93f097a6105e22b4b53dad092de039160", 
     "repo_path": "/integration/gaia-central"
 }