Remove obsolete Cast extension IDs from various whitelists and files.

ui/file_manager/video_player/manifest.json

Index: ui/file_manager/video_player/manifest.json
diff --git a/ui/file_manager/video_player/manifest.json b/ui/file_manager/video_player/manifest.json
index c8ccd88749b27eecf4ebe88766bc1203c2c5b4e6..79e72f305cfb80f421ca26b91c4f7e5260fdbcb3 100644
--- a/ui/file_manager/video_player/manifest.json
+++ b/ui/file_manager/video_player/manifest.json
@@ -66,12 +66,7 @@
         "js/background_scripts.js"
       ]
     },
-    // The following ids are cast extension's ids .
-    // - boadgeojelhgndaghljhdicfkmllpafd (release)
-    // - dliochdbjfkdbacpmhlcpmleaejidimm (beta)
-    // - hfaagokkkhdbgiakmmlclaapfelnkoah
-    // - fmfcbgogabcbclcofgocippekhfcmgfj
-    // - enhhojjnijigcajfphajepfemndkmdlo
-    "content_security_policy": "default-src 'none'; script-src 'self' blob: filesystem: chrome://resources chrome-extension://boadgeojelhgndaghljhdicfkmllpafd chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm chrome-extension://hhaomjibdihmijegdhdafkllkbggdgoj chrome-extension://fmfcbgogabcbclcofgocippekhfcmgfj chrome-extension://enhhojjnijigcajfphajepfemndkmdlo; style-src 'self' blob: filesystem: chrome://resources 'unsafe-inline'; img-src 'self' blob: filesystem: chrome://theme chrome://resources data: https://www.googledrive.com; media-src 'self' blob: filesystem:; object-src 'self' blob: filesystem:; font-src chrome://resources;"
+    // enhhojjnijigcajfphajepfemndkmdlo is the Media Router component extension ID.
+    "content_security_policy": "default-src 'none'; script-src 'self' blob: filesystem: chrome://resources chrome-extension://hhaomjibdihmijegdhdafkllkbggdgoj chrome-extension://enhhojjnijigcajfphajepfemndkmdlo; style-src 'self' blob: filesystem: chrome://resources 'unsafe-inline'; img-src 'self' blob: filesystem: chrome://theme chrome://resources data: https://www.googledrive.com; media-src 'self' blob: filesystem:; object-src 'self' blob: filesystem:; font-src chrome://resources;"
   }
 }