Bug 891763 - Browser API: mozbrowserresize event. r=jlebar

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extra : rebase_source : ba426c66e1fb6f108107c44c64fd170ea384a6db
Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/ce45a15d0dc1
Author: b2gautomation <jonallengriffin@gmail.com>
Desc: Bug 907941 - gaia-ui-tests-pushbot (see bug)