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

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https://hg.mozilla.org/integration/gaia-central/rev/1d85e76d19ed
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #18003 from gasolin/issue-971538

Bug 971538 - [System2] Instantiable PermissionManager, r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/4cbefa623985
Author: gasolin <gasolin@gmail.com>
Desc: Bug 971538 - [System2] Instantiable PermissionManager

- rename currentPermission to permissionType

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "d8dbcd6ac9804faf820790a515d1faec240a6fc2", 
+    "revision": "1d85e76d19ed6e3ae1d0745b8e04e0ad513801fe", 
     "repo_path": "/integration/gaia-central"
 }