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

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https://hg.mozilla.org/integration/gaia-central/rev/c0c59e09d2ef
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1126494 - merge pull request #27720 from KevinGrandon:bug_1126494_disable_theme_color_private_window to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/f15f54291448
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1126494 - Disable theme-color when in private browsing r=etienne

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "0ccea2ed02478ac26774a23822cbcb0ed7c896e6", 
+        "git_revision": "79886b117bae7cfe038245e3032c92809d7af3ed", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "122983b107a7f7c8e473000e081bd2cf1d002a96", 
+    "revision": "c0c59e09d2ef634357d9644127bb8ce7a1234ff4", 
     "repo_path": "integration/gaia-central"
 }