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

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https://hg.mozilla.org/integration/gaia-central/rev/c921386cba61
Author: Sam Foster <sam@sam-i-am.com>
Desc: Merge pull request #20506 from sfoster/bug-1019289-videos

Bug 1019289 - Update FTU tutorial videos. r=me

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https://hg.mozilla.org/integration/gaia-central/rev/2fe189cd6783
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1019289 - Update FTU tutorial videos. r=me
Bumping manifests a=b2g-bump
Bug 1025143 - Fix a compilation error in TestTypedEnum.cpp with clang-cl; r=bjacob

This makes the code more correct since if we don't have constexpr
support in the compiler, the CastableTypedEnumResult type would
actually not be a literal type, so we should not assert that here.
Bug 1025078 - [@nsPerformance::GetDOMTiming()], r=baku
Bug 1022235: Make the webrtc LoadManager/LoadMonitor a singleton r=bsmedberg,pkerr
Backed out changeset 0cdef46c65c1 (bug 979104) for causing bug 1024324
backout 578bf8d6363c for causing robocop pan regression
Bug 1025103 - blame preprocessor limitation for lack of clarifying parentheses in complex conditional directive; r=rnewman
Bug 1023914 - Turn empty view image padding into margin. r=lucasr
Bug 1023544 - Add back ability to remove dynamic panels in settings. r=liuche
Bug 1024778 - Part 1: Use the correct containing layout in the RemoteTabsVerificationPanel. r=lucasr
Merge inbound to m-c a=merge
Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/fd275a293099
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #20257 from KevinGrandon/bug_1022971_vertical_rename_all_the_things

Bug 1022971 - Rename Icon grid object to Mozapp

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https://hg.mozilla.org/integration/gaia-central/rev/e2f679da6a71
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1022971 - Rename Icon grid object to Mozapp r=lightsofapollo
Bumping manifests a=b2g-bump
Merge inbound to m-c a=merge
Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/79d87e998f83
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #20516 from KevinGrandon/bug_1021401_edit_search_term

Bug 1021401 - Can't Edit Search Term in Rocket Bar

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https://hg.mozilla.org/integration/gaia-central/rev/6ffe3ea8922e
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1021401 - Follow-up, add test r=me

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https://hg.mozilla.org/integration/gaia-central/rev/00152ef06451
Author: vingtetun <21@vingtetun.org>
Desc: Bug 1021401 - Can't Edit Search Term in Rocket Bar r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/d7d8d3ad2f2f
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1024915 - Disable intermittent test, form_test.js
Bumping manifests a=b2g-bump
Merge fx-team to m-c a=merge
Merge fx-team to m-c a=merge
Merge m-c to b2g-inbound