Add cookie convenience funcs

Fix test helper func

http.go

@@ -14,33 +14,6 @@ import (
 	"golang.org/x/net/html/atom"
 )
 
-func getCookie(jar http.CookieJar, u *url.URL, name string) *http.Cookie {
-	cookies := jar.Cookies(u)
-	for _, c := range cookies {
-		if c.Name == name {
-			return c
-		}
-	}
-
-	return nil
-}
-
-func setCookie(jar http.CookieJar, u *url.URL, newCookie *http.Cookie) {
-	cookies := jar.Cookies(u)
-
-	for i, c := range cookies {
-		if c.Name == newCookie.Name {
-			cookies[i] = newCookie
-			jar.SetCookies(u, cookies)
-			return
-		}
-	}
-
-	// Append if not already existing.
-	cookies = append(cookies, newCookie)
-	jar.SetCookies(u, cookies)
-}
-
 // Get XFToken (data-csrf) from page html.
 func XFToken(page io.Reader) (string, error) {
 	z := html.NewTokenizer(page)