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

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https://hg.mozilla.org/integration/gaia-central/rev/29aa507514b7
Author: Sean Lee <weilonge@gmail.com>
Desc: Merge pull request #32734 from weilonge/seanlee/TVBrowser/master/Bug1218303

Bug 1218303 - Check history records by time and export maximum size argument to SyncBrowserDB.getHistory. r=yifan

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https://hg.mozilla.org/integration/gaia-central/rev/872d8547c862
Author: Sean Lee <selee@mozilla.com>
Desc: Bug 1218303 - Check history records by time and export maximum size argument to SyncBrowserDB.getHistory. r=yifan

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "ded27f8e9bb174c60e6058e850222ae0a5873776", 
+        "git_revision": "86d4341173c391eaad6de90b51691a6e8387a1be", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "12727508736f2db471d852e8e5d53eafe83ba8d5", 
+    "revision": "29aa507514b7ed21ffcb6292cffe8f2c17ba0d28", 
     "repo_path": "integration/gaia-central"
 }