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

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https://hg.mozilla.org/integration/gaia-central/rev/c760012bdd6b
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #14221 from zacc/bug_942107_contacts

Bug 942107 - Be smarter about locators in Contacts app

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https://hg.mozilla.org/integration/gaia-central/rev/c399befe2dea
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 942107 - Be smarter about locators in Contacts app

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "03858d5335b08bcf56f5b816ceed304d4b0d3bdf", 
+    "revision": "c760012bdd6b023579819826f68e0adb39d5daaa", 
     "repo_path": "/integration/gaia-central"
 }