Add referrerpolicy to style and import

third_party/WebKit/Source/core/html/LinkResource.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/html/LinkResource.h"
 
 #include "core/HTMLNames.h"
 #include "core/dom/Document.h"
 #include "core/html/HTMLLinkElement.h"
 #include "core/html/imports/HTMLImportsController.h"
+#include "platform/weborigin/SecurityPolicy.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 
 LinkResource::LinkResource(HTMLLinkElement* owner) : m_owner(owner) {}
 
 LinkResource::~LinkResource() {}
 
 bool LinkResource::shouldLoadResource() const {
@@ skipping 13 matching lines @@
 }
 
 LinkRequestBuilder::LinkRequestBuilder(HTMLLinkElement* owner)
     : m_owner(owner), m_url(owner->getNonEmptyURLAttribute(hrefAttr)) {
   m_charset = m_owner->getAttribute(charsetAttr);
   if (m_charset.isEmpty() && m_owner->document().frame())
     m_charset = m_owner->document().characterSet();
 }
 
 FetchRequest LinkRequestBuilder::build(bool lowPriority) const {
-  FetchRequest request(ResourceRequest(m_owner->document().completeURL(m_url)),
-                       m_owner->localName(), m_charset);
+  ResourceRequest resourceRequest(m_owner->document().completeURL(m_url));
+  ReferrerPolicy referrerPolicy = m_owner->referrerPolicy();
+  if (referrerPolicy != ReferrerPolicyDefault) {

[jochen (gone - plz use gerrit), 2017/01/03 08:41:49]

why this if() ?

[Yoav Weiss, 2017/01/03 09:03:48]

I was basing that code on ImageLoader.cpp:304 which includes a similar
condition, and sets the referrer only if it was explicitly set by an attribute.
If that is not correct, we'd have to fix that in multiple locations.

+    resourceRequest.setHTTPReferrer(SecurityPolicy::generateReferrer(
+        referrerPolicy, m_url, m_owner->document().outgoingReferrer()));
+  }
+  FetchRequest request(resourceRequest, m_owner->localName(), m_charset);
   if (lowPriority)
     request.setDefer(FetchRequest::LazyLoad);
   request.setContentSecurityPolicyNonce(
       m_owner->fastGetAttribute(HTMLNames::nonceAttr));
   return request;
 }
 
 }  // namespace blink