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

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https://hg.mozilla.org/integration/gaia-central/rev/13ff2d8c77a1
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #27896 from alivedise/bugzilla/1120541/fatal-error-title-max

Bug 1120541 - Do not maximize titlebar if it is fatal error +autoland, r=cwiiis

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https://hg.mozilla.org/integration/gaia-central/rev/111662e6aefa
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1120541 - Do not maximize titlebar if it is fatal error

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "9c3a425eb5ff96ea90e91fb5a7ca67ad32dc9ce5", 
+        "git_revision": "d932a55670e207de28d341368b7b92498e131683", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "7f31203dd371da74dcf646147f937d5d30115337", 
+    "revision": "13ff2d8c77a16a2cf0c4d5f7771214b59a52659e", 
     "repo_path": "integration/gaia-central"
 }