Bumping gaia.json for 7 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/07bbb7902390
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #23041 from aosmond/fix_record_error_display

Bug 1055619

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https://hg.mozilla.org/integration/gaia-central/rev/83bd19b9d82b
Author: Andrew Osmond <aosmond@gmail.com>
Desc: Add brief comment clarifying why we ignore err param

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https://hg.mozilla.org/integration/gaia-central/rev/ca35d90b391d
Author: Andrew Osmond <aosmond@gmail.com>
Desc: Fix copy and paste error (and source) for error callback prototype

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https://hg.mozilla.org/integration/gaia-central/rev/3f2a07a4e861
Author: Andrew Osmond <aosmond@gmail.com>
Desc: Make gecko recording errors display a generic error message instead of nothing

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https://hg.mozilla.org/integration/gaia-central/rev/49fb677abe5b
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #23047 from eliperelman/bug-1048593

Bug 1048593 - Changing system confirm dialogs to account for software home button

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https://hg.mozilla.org/integration/gaia-central/rev/01eb2885d83a
Author: Eli Perelman <eli@eliperelman.com>
Desc: Bug 1048593 - Changing system confirm dialogs to account for software home button

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https://hg.mozilla.org/integration/gaia-central/rev/a957930ad1d2
Author: Ed Morley <emorley@mozilla.com>
Desc: Revert "Bug 1052503 - [Rocketbar] Update loading progress bar r=benfrancis" for B2G debug emulator xpcshell timeouts

This reverts commit 3a31d1317cffb14fb0636467ce2dcca15c9b19d3.
Bumping manifests a=b2g-bump