Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/32b72f5b6b07
Author: Greg Weng <snowmantw@gmail.com>
Desc: Revert "Merge pull request #17835 from snowmantw/issue937442-lockscreen-window"

This reverts commit f9a44b5e3cbea1e48b12716aceb0e365fec9e18e, reversing
changes made to abdabccec260237674e6503e55e10623124a69cc.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "790517c7c868d5231e97c2eadc5b9115daf2b13b", 
+    "revision": "32b72f5b6b072ccd18201befc388594deb9f9b14", 
     "repo_path": "/integration/gaia-central"
 }