Teach URLRequest about initiator checks for First-Party-Only cookies.

net/url_request/test_url_fetcher_factory.h

Index: net/url_request/test_url_fetcher_factory.h
diff --git a/net/url_request/test_url_fetcher_factory.h b/net/url_request/test_url_fetcher_factory.h
index 014bf4245aa53c099fb2fdebd9e536b6a847e0b4..c8d786759366cf72746795977f2f2a1365a21f94 100644
--- a/net/url_request/test_url_fetcher_factory.h
+++ b/net/url_request/test_url_fetcher_factory.h
@@ -114,7 +114,7 @@ class TestURLFetcher : public URLFetcher {
   void AddExtraRequestHeader(const std::string& header_line) override;
   void SetRequestContext(
       URLRequestContextGetter* request_context_getter) override;
-  void SetFirstPartyForCookies(const GURL& first_party_for_cookies) override;
+  void SetInitiatorURL(const GURL& initiator) override;
   void SetURLRequestUserData(
       const void* key,
       const CreateDataCallback& create_data_callback) override;