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

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https://hg.mozilla.org/integration/gaia-central/rev/25dc33c0a92f
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #26125 from nullaus/bug1077595

Bug1077595

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https://hg.mozilla.org/integration/gaia-central/rev/c5afe0457d7b
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: bug 1077595 - Use datastore representation of download as soon as possible. Only call clearAllDone on Gaia DownloadManager construction. Migrate handling status bar system downloads indicator to status bar itself. r=mhenretty,kgrandon,arthur.chen
Bumping manifests a=b2g-bump