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

========

https://hg.mozilla.org/integration/gaia-central/rev/f44b0c133388
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Revert "Revert "Merge pull request #12892 from comoyo/value_selector_inputcontext""

This reverts commit a8606f77a25fab9497c7130eac6cf7a29a2783ac.

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "e4b8f3ed4be2ddbf73af5f683aca85a4d99703db", 
+    "revision": "f44b0c133388799bcbbab9ac547e494bda867f6b", 
     "repo_path": "/integration/gaia-central"
 }