Add option --cookies-from-browser to load cookies from a browser (#488)

* also adds `--no-cookies-from-browser`

Original PR: https://github.com/ytdl-org/youtube-dl/pull/29201
Authored by: mbway

yt_dlp/__init__.py

@@ -20,6 +20,7 @@ from .compat import (
     compat_getpass,
     workaround_optparse_bug9161,
 )
+from .cookies import SUPPORTED_BROWSERS
 from .utils import (
     DateRange,
     decodeOption,
@@ -242,6 +243,12 @@ def _real_main(argv=None):
         if opts.convertthumbnails not in FFmpegThumbnailsConvertorPP.SUPPORTED_EXTS:
             parser.error('invalid thumbnail format specified')
 
+    if opts.cookiesfrombrowser is not None:
+        opts.cookiesfrombrowser = [
+            part.strip() or None for part in opts.cookiesfrombrowser.split(':', 1)]
+        if opts.cookiesfrombrowser[0] not in SUPPORTED_BROWSERS:
+            parser.error('unsupported browser specified for cookies')
+
     if opts.date is not None:
         date = DateRange.day(opts.date)
     else:
@@ -628,6 +635,7 @@ def _real_main(argv=None):
         'break_on_reject': opts.break_on_reject,
         'skip_playlist_after_errors': opts.skip_playlist_after_errors,
         'cookiefile': opts.cookiefile,
+        'cookiesfrombrowser': opts.cookiesfrombrowser,
         'nocheckcertificate': opts.no_check_certificate,
         'prefer_insecure': opts.prefer_insecure,
         'proxy': opts.proxy,