Referrer Policy: Update SanitizeForRequest with new default behavior.

content/public/common/referrer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_COMMON_REFERRER_H_
 #define CONTENT_PUBLIC_COMMON_REFERRER_H_
 
 #include "base/logging.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
 #include "url/gurl.h"
 
 namespace content {
 
 // This struct holds a referrer URL, as well as the referrer policy to be
 // applied to this URL. When passing around referrers that will eventually end
 // up being used for URL requests, always use this struct.
 struct CONTENT_EXPORT Referrer {
-  Referrer(const GURL& url, blink::WebReferrerPolicy policy) : url(url),
-                                                                policy(policy) {
-  }
-  Referrer() : policy(blink::WebReferrerPolicyDefault) {
-  }
+  Referrer(const GURL& url, blink::WebReferrerPolicy policy)
+      : url(url), policy(policy) {}
+  Referrer() : policy(blink::WebReferrerPolicyDefault) {}
 
   GURL url;
   blink::WebReferrerPolicy policy;
 
   static Referrer SanitizeForRequest(const GURL& request,
-                                     const Referrer& referrer) {
-    Referrer sanitized_referrer(referrer.url.GetAsReferrer(), referrer.policy);
-
-    if (!request.SchemeIsHTTPOrHTTPS() ||
-        !sanitized_referrer.url.SchemeIsHTTPOrHTTPS()) {
-      sanitized_referrer.url = GURL();
-      return sanitized_referrer;
-    }
-
-    switch (sanitized_referrer.policy) {
-      case blink::WebReferrerPolicyDefault:
-        if (sanitized_referrer.url.SchemeIsSecure() &&
-            !request.SchemeIsSecure()) {
-          sanitized_referrer.url = GURL();
-        }
-        break;
-      case blink::WebReferrerPolicyAlways:
-        break;
-      case blink::WebReferrerPolicyNever:
-        sanitized_referrer.url = GURL();
-        break;
-      case blink::WebReferrerPolicyOrigin:
-        sanitized_referrer.url = sanitized_referrer.url.GetOrigin();
-        break;
-      default:
-        NOTREACHED();
-        break;
-    }
-    return sanitized_referrer;
-  }
+                                     const Referrer& referrer);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_REFERRER_H_