Explicitly whitelist 'blob:' and 'filesystem:' for built-in extensions.

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 8f4389e4fe86a765cb1ee66973a6fd5e51830a4c..ba25d6b9adc98c9dfa8b40066585b1a9282e3446 100644
--- a/ui/file_manager/video_player/manifest.json
+++ b/ui/file_manager/video_player/manifest.json
@@ -89,6 +89,6 @@
     // - hfaagokkkhdbgiakmmlclaapfelnkoah
     // - fmfcbgogabcbclcofgocippekhfcmgfj
     // - enhhojjnijigcajfphajepfemndkmdlo
-    "content_security_policy": "default-src 'none'; script-src 'self' chrome://resources chrome-extension://boadgeojelhgndaghljhdicfkmllpafd chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm chrome-extension://hhaomjibdihmijegdhdafkllkbggdgoj chrome-extension://fmfcbgogabcbclcofgocippekhfcmgfj chrome-extension://enhhojjnijigcajfphajepfemndkmdlo; style-src 'self' chrome://resources 'unsafe-inline'; img-src 'self' chrome://theme chrome://resources data: https://www.googledrive.com; media-src 'self'; object-src 'self'"
+    "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:"
   }
 }