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

========

https://hg.mozilla.org/integration/gaia-central/rev/68ce99a4e176
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Bug 1110913 - Skip lockscreen_media_playback_test.js for frequent failures in automation.

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "6d91a3d13cc2a2f4a1f05e4db1076ca31517f928", 
+        "git_revision": "c5425d9f1f5184731a59ed4bc99295acbde30390", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "2330e0fd58c5637fd22379b3cde301458ebb97cc", 
+    "revision": "68ce99a4e1761c06e5f31f6674ee46fef1bbf44b", 
     "repo_path": "integration/gaia-central"
 }