Bumping gaia.json for 9 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/1d15fdde7ac7
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 994976 - Disable intermittent failing test, alarm > without alarm mocks create two events with simultaneous reminders

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https://hg.mozilla.org/integration/gaia-central/rev/c3730ed93948
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #17990 from KevinGrandon/bug_963991_search_app_window_2

Bug 963991 - [Rocketbar] Implement SearchWindow r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/37c780ae1795
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 963991 - [Rocketbar] Implement SearchWindow r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/af5c0c93413b
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #18155 from azasypkin/bug-992946-image-previews

Bug 992946 - [VDR] Update threads image previews style to match the refresh. r=julien

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https://hg.mozilla.org/integration/gaia-central/rev/36ada914957e
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 992946 - [VDR] Update threads image previews style to match the refresh.

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https://hg.mozilla.org/integration/gaia-central/rev/0aef3d581e01
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #17207 from JerryShih/bug-974807-handle-lost-context-in-gallery-redo-when-lose-master

Bug 989847 - Handle webgl context lose/restore event for gallery editor mode r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/2d31d6e324ae
Author: Jerry Shih <hshih@mozilla.com>
Desc: Bug 974807 - [Sora][gallery]WebGL context is lost when the screen is turned off

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https://hg.mozilla.org/integration/gaia-central/rev/e883d2f78e8f
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #18238 from julienw/926385-saner-button-rules

Bug 926385 - [Messages] saner button css rules r=julien

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https://hg.mozilla.org/integration/gaia-central/rev/ac0a152cbb3a
Author: kumarrishav <rishav006@gmail.com>
Desc: Bug 926385 - [Messages] saner button css rules r=julien

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "7877d548097b1e69e3749e6620e792e3908ae9bd", 
+    "revision": "1d15fdde7ac78abd69b86ef89ff58d02ae912f57", 
     "repo_path": "/integration/gaia-central"
 }