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

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https://hg.mozilla.org/integration/gaia-central/rev/d5d7a2b06574
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #12059 from asutherland/email-resize-embedded-reload

Bug 914493 - [Email] iframe is not resized for the embedded images that were already downloaded while building body. r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/a52d9ef45517
Author: praveen.singapati <praveen.singapati@lge.com>
Desc: Bug 914493 - [Email] iframe is not resized for the embedded images that were already downloaded while building body. r=asuth
Bumping gaia.json for 4 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/a95e393bd448
Author: Sam Joch <samuel@guiora.com>
Desc: Merge pull request #10296 from samjoch/bug-800002-GalleryEditModeExposurePolish

Bug 800002 - [Gallery] Edit Mode Exposure Polish r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/336e2719a390
Author: Sam Joch <samuel@guiora.com>
Desc: Bug 800002 - [Gallery] Edit mode exposure polish

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https://hg.mozilla.org/integration/gaia-central/rev/fafd10bbf277
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #12064 from gaye/bump-marionette-helper-007

Bump marionette-helper to 0.0.7

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https://hg.mozilla.org/integration/gaia-central/rev/e8edc6bca78d
Author: gaye <gaye@mozilla.com>
Desc: Bump marionette-helper to 0.0.7
Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/2745386d2e6d
Author: Gregor Wagner <anygregor@gmail.com>
Desc: Merge pull request #12043 from nullaus/browser-test-fix

Bug 913701 - Unit Test for Operator Variant Customizations is failing

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https://hg.mozilla.org/integration/gaia-central/rev/f3542eda7ca7
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: bug 913701

MozSettings must be present at all times because it's required by simple_operator_variant_helper.js. If it's not present on window.navigator it will cause test failures because SimpleOperatorVariantHelper cannot function as expected.