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

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https://hg.mozilla.org/integration/gaia-central/rev/4ea81d5b40c9
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #25331 from kumarrishav/Bug-1054635

Bug 1054635 - Context menu/long tap on container area in Composer panel causes javascript error. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/858fe8997401
Author: kumarrishav <rishav006@gmail.com>
Desc: Bug 1054635 - Context menu/long tap on container area in Composer panel causes javascript error

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "b3f1a9a22f1e71caa6b4edca6892ea75e3c0bf7f", 
+    "revision": "4ea81d5b40c9ef8f13938e0658d22ae51029bae1", 
     "repo_path": "integration/gaia-central"
 }