Bumping gaia.json for 7 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/eca97188e4fb
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #21122 from etiennesegonzac/bug-1028048

Bug 1028048 - Making sure the edge swipe detector forwards events to the topmost window r=21

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https://hg.mozilla.org/integration/gaia-central/rev/f590ec61ce68
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1028048 - Making sure the edge swipe detector forwards events to the topmost window.

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https://hg.mozilla.org/integration/gaia-central/rev/61804e38305f
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #21140 from vingtetun/bug1030675.followup

Bug 1030675 - Handle search app crashes. Followup. r=kgrandon

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https://hg.mozilla.org/integration/gaia-central/rev/6fef7922b890
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1030675 - Handle search app crashes. Followup. r=kgrandon

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https://hg.mozilla.org/integration/gaia-central/rev/fa3f411671af
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #21139 from vingtetun/bug1030248.landing

Bug1030248.landing

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https://hg.mozilla.org/integration/gaia-central/rev/2c9b39992cee
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1030248 - Expand native contextmenu for the search app in order to cover the whole screen. r=kgrandon

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https://hg.mozilla.org/integration/gaia-central/rev/78336857ba43
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1030248 - Use native context menu in the search app. r=kgrandon
Bumping manifests a=b2g-bump