Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/ce5e32d144c0
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #23744 from KevinGrandon/bug_1061679_chrome_asset_refinement

Bug 1061679 - [Browser Chrome] Press states of back, refresh, cancel and overflow menu using the wrong icons

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https://hg.mozilla.org/integration/gaia-central/rev/c410af57ea99
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1061679 - [Browser Chrome] Press states of back, refresh, cancel and overflow menu using the wrong icons r=epang

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https://hg.mozilla.org/integration/gaia-central/rev/0f477342ef17
Author: Eli Perelman <eli@eliperelman.com>
Desc: Fixing SHB visibility in app landscape mode r=kgrandon
Bumping manifests a=b2g-bump