Add console warning and tests for strict secure cookies.

third_party/WebKit/LayoutTests/http/tests/inspector/network/resources/set-cookie.php

 <?php
     header("Expires: Thu, 01 Dec 2003 16:00:00 GMT");
     header("Cache-Control: no-store, no-cache, must-revalidate");
     header("Pragma: no-cache");
     header("Content-Type: text/plain");
     header("Access-Control-Allow-Origin: http://127.0.0.1:8000");
+    $secure = isset($_GET["secure"]);
     $length = isset($_GET["length"]) ? (int) $_GET["length"] : 0;
     if (!$length) {
-      setcookie("TestCookie", "TestCookieValue");
+      setcookie("TestCookie", "TestCookieValue", 0, "", "", $secure);
     } else {
       $data = "";
       for ($i = 0; $i < $length; $i++) {
         $data .= "a";
       }
+      if ($secure)
+        $data .= "; Secure";
       header("Set-Cookie: $data");
     }
     echo("Cookie set.");
 ?>