Add ReferrerPolicy support to preload

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

 // Copyright 2016 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.
 
 #include "core/html/LinkStyle.h"
 
 #include "core/css/StyleSheetContents.h"
 #include "core/fetch/CSSStyleSheetResource.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/SubresourceIntegrity.h"
@@ skipping 287 matching lines @@
       return;
     if (!document().contentSecurityPolicy()->allowImageFromSource(
             builder.url()))
       return;
     if (document().frame() && document().frame()->loader().client()) {
       document().frame()->loader().client()->dispatchDidChangeIcons(
           m_owner->relAttribute().getIconType());
     }
   }
 
-  if (!m_owner->loadLink(type, as, media, builder.url()))
+  if (!m_owner->loadLink(type, as, media, m_owner->referrerPolicy(),
+                         builder.url()))
     return;
 
   if (m_disabledState != Disabled && m_owner->relAttribute().isStyleSheet() &&
       styleSheetTypeIsSupported(type) && shouldLoadResource() &&
       builder.url().isValid()) {
     if (resource()) {
       removePendingSheet();
       clearResource();
       clearFetchFollowingCORS();
     }
@@ skipping 92 matching lines @@
     removePendingSheet();
 }
 
 DEFINE_TRACE(LinkStyle) {
   visitor->trace(m_sheet);
   LinkResource::trace(visitor);
   ResourceOwner<StyleSheetResource>::trace(visitor);
 }
 
 }  // namespace blink