Implements strict secure cookies as the default behavior in //net

net/url_request/url_request_test_util.cc

Index: net/url_request/url_request_test_util.cc
diff --git a/net/url_request/url_request_test_util.cc b/net/url_request/url_request_test_util.cc
index 7ce435a23e6a008ee6bec1953601133106235a1a..97ccc71bad932f1f65970a99395fa22bc2ffc10d 100644
--- a/net/url_request/url_request_test_util.cc
+++ b/net/url_request/url_request_test_util.cc
@@ -659,10 +659,6 @@ bool TestNetworkDelegate::OnAreExperimentalCookieFeaturesEnabled() const {
   return experimental_cookie_features_enabled_;
 }
 
-bool TestNetworkDelegate::OnAreStrictSecureCookiesEnabled() const {
-  return experimental_cookie_features_enabled_;
-}
-
 bool TestNetworkDelegate::OnCancelURLRequestWithPolicyViolatingReferrerHeader(
     const URLRequest& request,
     const GURL& target_url,