Bumping gaia.json for 8 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/a4e5f877ea79
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #19953 from pivanov/bug-1018163

Bug 1018163 - [Browser] Save image dialog styling looks broken

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https://hg.mozilla.org/integration/gaia-central/rev/d2ce74060782
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 1018163 - [Browser] Save image dialog styling looks broken

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https://hg.mozilla.org/integration/gaia-central/rev/abad1cd1f365
Author: Zibi Braniecki <zbigniew.braniecki@gmail.com>
Desc: Merge pull request #19513 from zbraniecki/994290-l10n-cleanup-storage-ast

Bug 994290 - Clean up attribute storage in AST. r=stas

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https://hg.mozilla.org/integration/gaia-central/rev/02388a508937
Author: Zbigniew Braniecki <gandalf@mozilla.com>
Desc: Bug 994290 - Clean up attribute storage in AST

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https://hg.mozilla.org/integration/gaia-central/rev/86f1f950056d
Author: punamdahiya <punamdahiya@yahoo.com>
Desc: Merge pull request #20253 from punamdahiya/Bug1022457

Bug 1022457 - [NFC] Could not share video from video app via NFC r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/1b3c1a351908
Author: Punam Dahiya <punamdahiya@yahoo.com>
Desc: Bug 1022457 - [NFC] Could not share video from video app via NFC r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/ed39086ae2c2
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Merge pull request #19963 from dmarcos/bug1019965

Bug 1019965 - [Camera] Implement visual feedback for continuous auto foc...

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https://hg.mozilla.org/integration/gaia-central/rev/fbb3963c6770
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Bug 1019965 - [Camera] Implement visual feedback for continuous auto focus
Bumping manifests a=b2g-bump