[extractors] Use new framework for existing embeds (#4307)

`Brightcove` is difficult to migrate because it's subclasses may depend
on the signature of the current functions. So it is left as-is for now

Note: Tests have not been migrated

yt_dlp/extractor/vice.py

@@ -2,7 +2,6 @@ import functools
 import hashlib
 import json
 import random
-import re
 import time
 
 from .adobepass import AdobePassIE
@@ -38,6 +37,7 @@ class ViceBaseIE(InfoExtractor):
 class ViceIE(ViceBaseIE, AdobePassIE):
     IE_NAME = 'vice'
     _VALID_URL = r'https?://(?:(?:video|vms)\.vice|(?:www\.)?vice(?:land|tv))\.com/(?P<locale>[^/]+)/(?:video/[^/]+|embed)/(?P<id>[\da-f]{24})'
+    _EMBED_REGEX = [r'<iframe\b[^>]+\bsrc=["\'](?P<url>(?:https?:)?//video\.vice\.com/[^/]+/embed/[\da-f]{24})']
     _TESTS = [{
         'url': 'https://video.vice.com/en_us/video/pet-cremator/58c69e38a55424f1227dc3f7',
         'info_dict': {
@@ -103,17 +103,6 @@ class ViceIE(ViceBaseIE, AdobePassIE):
         'only_matching': True,
     }]
 
-    @staticmethod
-    def _extract_urls(webpage):
-        return re.findall(
-            r'<iframe\b[^>]+\bsrc=["\']((?:https?:)?//video\.vice\.com/[^/]+/embed/[\da-f]{24})',
-            webpage)
-
-    @staticmethod
-    def _extract_url(webpage):
-        urls = ViceIE._extract_urls(webpage)
-        return urls[0] if urls else None
-
     def _real_extract(self, url):
         locale, video_id = self._match_valid_url(url).groups()