Referrer Policy: Add new policies to URLRequest.

net/url_request/url_request.cc

Index: net/url_request/url_request.cc
diff --git a/net/url_request/url_request.cc b/net/url_request/url_request.cc
index a2ce07eaf13057c5608b9467e377ed77a9e98240..44728108383618a04341b480fa5c9c67dd117a77 100644
--- a/net/url_request/url_request.cc
+++ b/net/url_request/url_request.cc
@@ -653,9 +653,24 @@ void URLRequest::StartJob(URLRequestJob* job) {
   // If the referrer is secure, but the requested URL is not, the referrer
   // policy should be something non-default. If you hit this, please file a
   // bug.
-  if (referrer_policy_ ==
-          CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE &&
-      GURL(referrer_).SchemeIsSecure() && !url().SchemeIsSecure()) {
+  GURL referrer(referrer_);

[jochen (gone - plz use gerrit), 2014/11/19 10:25:13]

what about moving this to a helper function?

+  bool referrer_policy_requires_secure_referrer_transitions =
+      referrer_policy_ ==
+          CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE ||
+      referrer_policy_ ==
+          REDUCE_REFERRER_GRANULARITY_ON_TRANSITION_CROSS_ORIGIN;
+  bool secure_referrer_in_insecure_request =
+      referrer.SchemeIsSecure() && !url().SchemeIsSecure();
+  bool referrer_is_origin_only = referrer.GetOrigin() == referrer;
+  bool cross_origin_referrer = referrer.GetOrigin() != url().GetOrigin();
+  bool referrer_is_invalid =
+      (referrer_policy_requires_secure_referrer_transitions &&
+       secure_referrer_in_insecure_request) ||
+      (referrer_policy_ ==
+           REDUCE_REFERRER_GRANULARITY_ON_TRANSITION_CROSS_ORIGIN &&
+       cross_origin_referrer && !referrer_is_origin_only);
+
+  if (referrer_is_invalid) {
     if (!network_delegate_ ||
         !network_delegate_->CancelURLRequestWithPolicyViolatingReferrerHeader(
             *this, url(), GURL(referrer_))) {