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

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https://hg.mozilla.org/integration/gaia-central/rev/bc36d7553ee6
Author: Dale  Harvey <dale@arandomurl.com>
Desc: Merge pull request #10435 from dominickuo/bug-880571

Bug 880571 - [video] handle error codes for video element. r=daleharvey

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https://hg.mozilla.org/integration/gaia-central/rev/9eb8fb8941b2
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Bug 880571 - [video] handle error codes for video element