Add referrerpolicy to style and import

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

Index: third_party/WebKit/Source/core/html/LinkResource.cpp
diff --git a/third_party/WebKit/Source/core/html/LinkResource.cpp b/third_party/WebKit/Source/core/html/LinkResource.cpp
index 7b14b00a4432f33baed9ef0da7f09a04fe2a42c7..3f3a12062c15607305a8d33f24b7ed7f54de4ced 100644
--- a/third_party/WebKit/Source/core/html/LinkResource.cpp
+++ b/third_party/WebKit/Source/core/html/LinkResource.cpp
@@ -34,6 +34,7 @@
 #include "core/dom/Document.h"
 #include "core/html/HTMLLinkElement.h"
 #include "core/html/imports/HTMLImportsController.h"
+#include "platform/weborigin/SecurityPolicy.h"
 
 namespace blink {
 
@@ -67,8 +68,13 @@ LinkRequestBuilder::LinkRequestBuilder(HTMLLinkElement* owner)
 }
 
 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(