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

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https://hg.mozilla.org/integration/gaia-central/rev/d337ff34f778
Author: Fernando Jiménez Moreno <ferjmoreno@gmail.com>
Desc: Merge pull request #11193 from ferjm/calllog10percent

Bug 897036 - Dialer app remains at 10% loading when test_call_log_all_ca...

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https://hg.mozilla.org/integration/gaia-central/rev/84b2f61891f7
Author: Fernando Jiménez <ferjmoreno@gmail.com>
Desc: Bug 897036 - Dialer app remains at 10% loading when test_call_log_all_calls is run. r=francisco