Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/f69a6e0dc3d8
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #29188 from crh0716/1145756

Bug 1145756 - Set the cached value r=eragonj

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https://hg.mozilla.org/integration/gaia-central/rev/2d5fba7ffd44
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1145756 - Set the cached value

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https://hg.mozilla.org/integration/gaia-central/rev/4c84d2fae257
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1011478 - merge pull request #19323 from julienw:debug-mode-check-default-browser to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/40e95e68d973
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 1011478 - Disable browser.shell.checkDefaultBrowser also in DEBUG builds r=rickychien

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "f8651b9409aff7a769fc61588134591333e411f6", 
+        "git_revision": "1d14f4a6809de81ebd638117ed4ddd3b1b18f033", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "4dde119a41123859966bc7764b094473774388f8", 
+    "revision": "f69a6e0dc3d86a13a8a0960a21e599c3fa9e7845", 
     "repo_path": "integration/gaia-central"
 }