Cast Extensions API: Major namespace and object renaming

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 825 matching lines @@
   },
   "wallpaperPrivate": {
     "channel": "stable",
     "extension_types": ["platform_app"],
     "location": "component"
   },
   "webNavigation": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"]
   },
-  "webrtc": {
-    "channel": "dev",
-    "extension_types": ["extension"]
-  },
   "webrtcAudioPrivate": {
     "channel": "stable",
     "extension_types": ["extension"],
     "whitelist": [
       "80B9DC58E5210749F052F5B4DB239C50CF72AEB6",
       // Hangout Services component extension.
       "DF84F03F9B960409CCDE0D895B9650EBE81C0A8E",
       // Extension used for API test.
       "ADFA45434ABA2F1A4647E673F53FF37F8F6047A3"
     ]
@@ skipping 32 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
     ]
   }]
 }