Temporarily ignore maps_pixel_test failures while investigating root cause of bug.

scripts/slave/gatekeeper.json

 {
   "comment": ["This is a configuration file for gatekeeper_ng.py",
               "Look at that for documentation on this file's format."],
 
   "masters": {
     "https://build.chromium.org/p/chromium": [
       {
         "categories": [
           "chromium_archive_build",
           "chromium_checkdeps",
@@ skipping 95 matching lines @@
           "Android Debug (Nexus 7)",
           "GPU Linux Builder (dbg)",
           "GPU Mac Builder (dbg)",
           "GPU Win Builder (dbg)",
           "Linux Debug (NVIDIA)",
           "Mac 10.8 Debug (Intel)",
           "Mac Debug (Intel)",
           "Mac Retina Debug",
           "Win7 Debug (NVIDIA)",
           "Win8 Debug (NVIDIA)"
+        ],
+        "comment": [
+          "Re-enable maps_pixel_test once crbug.com/395914 is resolved."
+        ],
+        "excluded_steps": [
+          "maps_pixel_test"
         ]
       }
     ],
     "https://build.chromium.org/p/chromium.linux": [
       {
         "categories": [
           "chromium_tree_closer",
           "chromium_recipes"
         ],
         "builders": {
@@ skipping 341 matching lines @@
         "sandbox_linux_unittests",
         "sql_unittests",
         "sync_unit_tests",
         "ui_unittests",
         "unit_tests",
         "url_unittests"
       ]
     }
   }
 }