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

========

https://hg.mozilla.org/integration/gaia-central/rev/35ace089a8e5
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #13956 from bebef1987/942107_1

Bug 942107 - Reduce volume and be smarter about our use of locators brow...

========

https://hg.mozilla.org/integration/gaia-central/rev/175e5356788c
Author: Bebe <bebe@mozilla.ro>
Desc: Bug 942107 - Reduce volume and be smarter about our use of locators browser_app

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "614f04de085c22beab6a2dd0f537db461536a3d0", 
+    "revision": "35ace089a8e5080b259e590564a4aad0360e95f0", 
     "repo_path": "/integration/gaia-central"
 }