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

========

https://hg.mozilla.org/integration/gaia-central/rev/7cce35091212
Author: chirarobert <robert.chira@softvision.ro>
Desc: Merge pull request #26184 from viorelaioia/bug_1100256

Bug 1100256 - Unxfail test_browser_save_image.py, as Bug 1098338 is fixe...

========

https://hg.mozilla.org/integration/gaia-central/rev/b10f4f0fb521
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1100256 - Unxfail test_browser_save_image.py, as Bug 1098338 is fixed

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "adfb5b3b42bec84c99e10a5d24b40368bd060bbe", 
+    "revision": "7cce3509121253553ef185ded63fa7004a0b20a3", 
     "repo_path": "integration/gaia-central"
 }