fix: support for cookies in ContinueRequest #2850

Job	Run time
1/6 chromedriver-headless	6m 23s
2/6 chromedriver-headless	4m 24s
3/6 chromedriver-headless	4m 46s
4/6 chromedriver-headless	4m 44s
5/6 chromedriver-headless	3m 17s
6/6 chromedriver-headless	4m 36s
1/6 chromedriver-headful	7m 11s
2/6 chromedriver-headful	4m 28s
3/6 chromedriver-headful	5m 30s
4/6 chromedriver-headful	5m 15s
5/6 chromedriver-headful	3m 21s
6/6 chromedriver-headful	5m 17s
1/6 mapper-headless	6m 24s
2/6 mapper-headless	5m 33s
3/6 mapper-headless	5m 35s
4/6 mapper-headless	4m 50s
5/6 mapper-headless	3m 31s
6/6 mapper-headless	4m 48s
[Required] WPT sink	1s
Update WPT expectations (if required)	0s
Commit updated expectations	0s
	1h 29m 54s

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