Cast Extensions API: Factory method for creating a cast session

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.
 
 // To add a new whitelisted ID, SHA-1 it and force it to uppercase. In Bash:
 //
 // $ echo -n "aaaabbbbccccddddeeeeffffgggghhhh" | \
@@ skipping 121 matching lines @@
     "extension_types": ["extension", "legacy_packaged_app", "platform_app"],
     "whitelist": [
       "63ED55E43214C211F82122ED56407FF1A807F2A3",  // Dev
       "226CF815E39A363090A1E547D53063472B8279FA",  // Trusted Tester
       "FA01E0B81978950F2BC5A50512FD769725F57510",  // Staging
       "B11A93E7E5B541F8010245EBDE2C74647D6C14B9",  // Canary
       "F155646B5D1CA545F7E1E4E20D573DFDD44C2540",  // Trusted Tester (public)
       "16CA7A47AAE4BE49B1E75A6B960C3875E945B264"   // Release
     ]
   },
+  "cast.streaming": {
+    "channel": "dev",
+    "extension_types": ["extension"]
+  },
   "chromePrivate": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"],
     "whitelist": [
       "2462D64ACB971A7E708757159C2B17761D4FF54A",  // Citrix Receiver
       "3010EF507AFEF487EEA9CDE2930EC94867C60936",  // Citrix Receiver Beta
       "ABAABC5F49E022A76CBB12972A53B58354C04AC6"   // Citrix Receiver Dev
     ]
   },
   "chromeosInfoPrivate": {
@@ skipping 736 matching lines @@
     // Only allowed for whitelisted extensions until all the caveats are
     // addressed. Tracked in crbug/285151.
     "channel": "stable",
     "extension_types": ["extension"],
     "location": "component",
     "whitelist": [
       "D519188F86D9ACCEE0412007B227D9936EB9676B"  // GAIA Component Extension
     ]
   }]
 }