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

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https://hg.mozilla.org/integration/gaia-central/rev/200c6030f6f7
Author: Jim Porter <squibblyflabbetydoo@gmail.com>
Desc: Merge pull request #15664 from jimporter/music-usb-pick

Bug 943750 - Music app will not show files in pick mode if device is shared using USB and then unplugged

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https://hg.mozilla.org/integration/gaia-central/rev/18438a649782
Author: Jim Porter <jporter@mozilla.com>
Desc: Bug 943750 - Music app will not show files in pick mode if device is shared using USB and then unplugged

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "7aee1094c654625a2749064fa49a239dbbbb5044", 
+    "revision": "200c6030f6f71608f2fff0c0922fda3397d86f3b", 
     "repo_path": "/integration/gaia-central"
 }