Implementation of chrome://cast page.

extensions/common/api/_api_features.json

 // Copyright 2014 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.
 
 // This features file defines extension APIs implemented under src/extensions.
 // See extensions/common/features/* to understand this file, in particular
 // feature.h, simple_feature.h, and base_feature_provider.h.
 //
 // Note that specifying "web_page", "blessed_web_page", or "all" as a context
 // type will require manually updating chrome/renderer/resources/dispatcher.cc.
@@ skipping 170 matching lines @@
   },
   "extensionViewInternal": [
     {
       "internal": true,
       "contexts": ["blessed_extension"],
       "dependencies": ["permission:extensionview"]
     }, {
       "internal": true,
       "channel": "stable",
       "contexts": ["webui"],
-      "matches": ["chrome://media-router/*"]
+      "matches": [
+        "chrome://cast/*",
+        "chrome://media-router/*"
+      ]
     }
   ],
   "events": {
     "internal": true,
     "channel": "stable",
     "extension_types": ["platform_app", "extension"],
     "contexts": "all",
     "matches": ["<all_urls>"]
   },
   "guestViewInternal": [
     {
       "internal": true,
       "channel": "stable",
       "contexts": ["blessed_extension"]
     }, {
       "internal": true,
       "channel": "trunk",
       "contexts": ["webui"],
       "matches": [
+        "chrome://cast/*",
         "chrome://extensions-frame/*",
         "chrome://extensions/*",
         "chrome://chrome-signin/*",
         "chrome://media-router/*",
         "chrome://oobe/*"
       ]
     }
   ],
   "hid": {
     "dependencies": ["permission:hid"],
@@ skipping 281 matching lines @@
   }, {
     "channel": "stable",
     "contexts": ["webui"],
     "matches": [
       "chrome://chrome-signin/*",
       "chrome://media-router/*",
       "chrome://oobe/*"
     ]
   }]
 }