Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/4dee2b4a181e
Author: Steve Chung <schung@mozilla.com>
Desc: Bug 840038 - [MMS][User Story] Image rescaling to 300kB(Apply to composer attachment) - r=gnarf

Adds resizing step in Composer
Adds a resizing notification
Adds Composer.isResizing
Only show file too large error when not an image
Refactors getting mmsSizeLimitation
Defaults to 300k for mmsSizeLimitation
Adds "resize-image" locale string
Adds number: 1 to pick action

Closes gh-9854
Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/3667391fc76a
Author: Francisco Borja Salguero Castellano <fbsc@tid.es>
Desc: Merge pull request #10321 from borjasalguero/message_activity_proposal

Bug 880115 - [SMS / MMS] Activity handling does nothing when triggering ...

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https://hg.mozilla.org/integration/gaia-central/rev/58da9ac688fc
Author: borjasalguero <fbsc@tid.es>
Desc: Bug 880115 - [SMS / MMS] Activity handling does nothing when triggering twice from Contacts app r=julienw