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

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https://hg.mozilla.org/integration/gaia-central/rev/c865add68c33
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #12663 from crdlc/bug-923622

Bug 923622 - Avoid flickering showing the context menu dialog and implement a smooth transition

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https://hg.mozilla.org/integration/gaia-central/rev/e0e9c3fd8c8c
Author: crdlc <crdlc@tid.es>
Desc: Bug 923622 - Avoid flickering showing the context menu dialog and implement a smooth transition

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "1fff1ba9259bc4a9255a1a8149f372f6a4d6fac2", 
+    "revision": "c865add68c33528619e93b91e0353b7097db5172", 
     "repo_path": "/integration/gaia-central"
 }