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

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https://hg.mozilla.org/integration/gaia-central/rev/4ec0e8fb7819
Author: Fernando Jiménez Moreno <ferjmoreno@gmail.com>
Desc: Merge pull request #27753 from ferjm/bug1124114.trustedwindowcancel

Bug 1124114 - TrustedWindow does not notify about the dialog being close...

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https://hg.mozilla.org/integration/gaia-central/rev/3c238c2afe7a
Author: Fernando Jiménez Moreno <ferjmoreno@gmail.com>
Desc: Bug 1124114 - TrustedWindow does not notify about the dialog being closed by the user. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/916e22b3c7f9
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #27623 from cctuan/1119704

Bug 1119704 - blur last module only when latest module is handled

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https://hg.mozilla.org/integration/gaia-central/rev/e223f89810e4
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 1119704 - blur last module only when latest module is handled, r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/b6f26459dd3e
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #27768 from cctuan/1127227

Bug 1127227 - remove dup register for isSendFileQueueEmpty, r=gasolin

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https://hg.mozilla.org/integration/gaia-central/rev/63525cacda1f
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 1127227 - remove dup register for isSendFileQueueEmpty

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https://hg.mozilla.org/integration/gaia-central/rev/76aaa6866fe0
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Merge pull request #27767 from RickyChien/bug-1127210

Bug 1127210 - Remove the Gb checking for mobizilla_default_search.json r=@cctuan

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https://hg.mozilla.org/integration/gaia-central/rev/b2d6998208e4
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Bug 1127210 - Remove the Gb checking for mobizilla_default_search.json

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "b9d00b2215f612870ce49a36b23795af76dad425", 
+        "git_revision": "321db3aed93a21f719fa918356f4200b8f465ac7", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "6f920d9342c522601df9b8dba7705539dbcd8834", 
+    "revision": "4ec0e8fb78195772bef38253bc4b9b4b4f625e40", 
     "repo_path": "integration/gaia-central"
 }