Remove obsolete Cast extension IDs from various whitelists and files.

chrome/common/extensions/api/_api_features.json

Index: chrome/common/extensions/api/_api_features.json
diff --git a/chrome/common/extensions/api/_api_features.json b/chrome/common/extensions/api/_api_features.json
index bae830409d4d7e44484a591fab12d2043ebe005d..0ed79ea8f5eff27eb40bd7466076517428f2a953 100644
--- a/chrome/common/extensions/api/_api_features.json
+++ b/chrome/common/extensions/api/_api_features.json
@@ -171,10 +171,6 @@
     "dependencies": ["manifest:browser_action"],
     "whitelist": [
       "63ED55E43214C211F82122ED56407FF1A807F2A3",  // Dev
-      "FA01E0B81978950F2BC5A50512FD769725F57510",  // Beta
-      "B11A93E7E5B541F8010245EBDE2C74647D6C14B9",  // Canary
-      "F155646B5D1CA545F7E1E4E20D573DFDD44C2540",  // Google Cast Beta
-      "16CA7A47AAE4BE49B1E75A6B960C3875E945B264",  // Google Cast Stable
       // The extensions below here only use openPopup on a user action,
       // so are safe, and can be removed when the whitelist on that
       // capability is lifted. See crbug.com/436489 for context.
@@ -304,13 +300,8 @@
   }, {
     "dependencies": ["permission:desktopCapturePrivate"],
     "whitelist": [
-      "63ED55E43214C211F82122ED56407FF1A807F2A3",  // Dev
-      "FA01E0B81978950F2BC5A50512FD769725F57510",  // Beta
-      "B11A93E7E5B541F8010245EBDE2C74647D6C14B9",  // Canary
-      "F155646B5D1CA545F7E1E4E20D573DFDD44C2540",  // Google Cast Beta
-      "16CA7A47AAE4BE49B1E75A6B960C3875E945B264",  // Google Cast Stable
-      "C17CD9E6868D7B9C67926E0EC612EA25C768418F",  // http://crbug.com/457908
-      "226CF815E39A363090A1E547D53063472B8279FA"   // http://crbug.com/574889
+      "63ED55E43214C211F82122ED56407FF1A807F2A3",  // Media Router Dev
+      "226CF815E39A363090A1E547D53063472B8279FA"   // Media Router Stable
     ],
     "contexts": ["blessed_extension"]
   }],