Add ReferrerPolicy support to preload

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

Index: third_party/WebKit/Source/core/html/LinkStyle.cpp
diff --git a/third_party/WebKit/Source/core/html/LinkStyle.cpp b/third_party/WebKit/Source/core/html/LinkStyle.cpp
index b005d916dcdc822cd6e0d3419bf676959fc4fa00..7a2747909d6e950dc8280cfc20c636a27b8423ee 100644
--- a/third_party/WebKit/Source/core/html/LinkStyle.cpp
+++ b/third_party/WebKit/Source/core/html/LinkStyle.cpp
@@ -288,6 +288,7 @@ void LinkStyle::process() {
   String type = m_owner->typeValue().lower();
   String as = m_owner->asValue().lower();
   String media = m_owner->media().lower();
+  String referrerPolicy = m_owner->referrerPolicy().lower();
   LinkRequestBuilder builder(m_owner);
 
   if (m_owner->relAttribute().getIconType() != InvalidIcon &&
@@ -305,7 +306,7 @@ void LinkStyle::process() {
     }
   }
 
-  if (!m_owner->loadLink(type, as, media, builder.url()))
+  if (!m_owner->loadLink(type, as, media, referrerPolicy, builder.url()))
     return;
 
   if (m_disabledState != Disabled && m_owner->relAttribute().isStyleSheet() &&