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

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https://hg.mozilla.org/integration/gaia-central/rev/ad3545b1b770
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #14502 from tdz/bug-947918

Bug 947918: Support seeking to end of BlobView buffer r=padenot

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https://hg.mozilla.org/integration/gaia-central/rev/1f59113f9d80
Author: Thomas Zimmermann <tdz@users.sourceforge.net>
Desc: Bug 947918: Support seeking to end of BlobView buffer

Reading or advancing through all bytes in a BlobView buffer sets
the index to the length of the buffer. This patch changes 'seek'
to work the same way, so it's possible to seek to the buffer's
end.

Signed-off-by: Thomas Zimmermann <tdz@users.sourceforge.net>