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

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https://hg.mozilla.org/integration/gaia-central/rev/b525e07b2f32
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #20731 from alivedise/bugzilla/1024168_master/v2/dispatch-event-of-inner-window

Bug 1024168 - Dispatch inner window event on its element, r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/66135d8aa939
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1024168 - Dispatch inner window event on its element
Bumping manifests a=b2g-bump