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

========

https://hg.mozilla.org/integration/gaia-central/rev/c10670dff128
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #20526 from KevinGrandon/bug_1025499_search_intermittent

Bug 1025499 - [Search] Intermittent failure, Vertical - Search Search for app

========

https://hg.mozilla.org/integration/gaia-central/rev/1916de504e38
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1025499 - [Search] Intermittent failure, Vertical - Search Search for app r=daleharvey
Bumping manifests a=b2g-bump