Initial chrome.mdns API.

chrome/common/extensions/api/_permission_features.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // See c/c/e/features/* to understand this file, in particular feature.h,
 // simple_feature.h, and base_feature_provider.h.
 
 {
   "activeTab": {
     "channel": "stable",
@@ skipping 410 matching lines @@
       "ionpfmkccalenbmnddpbmocokhaknphg",  // Quickoffice dev
       "bpmcpldpdmajfigpchkicefoigmkfalc",  // Quickoffice component extension
       "ehibbfinohgbchlgdbfpikodjaojhccn",  // Editor
       "pmofbkohncoogjjhahejjfbppikbjigm",  // Google Now
       "khopmbdjffemhegeeobelklnbglcdgfh",  // RU-NTP
       "mlocfejafidcakdddnndjdngfmncfbeg",  // CCD Development
       "ganomidahfnpdchomfgdoppjmmedlhia",  // CCD Testing
       "eemlkeanncmjljgehlbplemhmdmalhdc"   // CCD Release
     ]
   },
+  "mdns": {
+    "channel": "stable",
+    "extension_types": ["extension"],
+    "whitelist": [
+      "enhhojjnijigcajfphajepfemndkmdlo",  // Dev
+      "pkedcjkdefgpdelpbcmbmeomcjbeemfm",  // Trusted Tester
+      "fmfcbgogabcbclcofgocippekhfcmgfj",  // Staging
+      "hfaagokkkhdbgiakmmlclaapfelnkoah",  // Canary
+      "F155646B5D1CA545F7E1E4E20D573DFDD44C2540",  // Trusted Tester (public)
+      "16CA7A47AAE4BE49B1E75A6B960C3875E945B264"   // Release
+    ]
+  },
   "musicManagerPrivate": {
     "channel": "stable",
     "extension_types": ["platform_app"],
     "whitelist": [
       "4B1D0E19C6C43C008C44A8278C8B5BFE15ABEB3C", // Music Manager
       "B8F61FD1B25DE03706DBB8906A73261E4DBB992A", // Test
       "F7FA7ABC1ECB89BA8EE6656847EFABBF43BB9BCA"
     ]
   },
   "nativeMessaging": {
@@ skipping 257 matching lines @@
   },
   "webRequestBlocking": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"]
   },
   "webview": {
     "channel": "stable",
     "extension_types": ["platform_app"]
   }
 }