Explicitly tell the preload request where to take the referrer from

third_party/WebKit/Source/core/html/parser/HTMLResourcePreloaderTest.cpp

 // Copyright 2015 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/parser/HTMLResourcePreloader.h"
 
 #include "core/html/parser/PreloadRequest.h"
 #include "core/testing/DummyPageHolder.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include <memory>
@@ skipping 34 matching lines @@
  protected:
   HTMLResourcePreloaderTest() : dummy_page_holder_(DummyPageHolder::Create()) {}
 
   void Test(PreconnectTestCase test_case) {
     // TODO(yoav): Need a mock loader here to verify things are happenning
     // beyond preconnect.
     PreloaderNetworkHintsMock network_hints;
     auto preload_request = PreloadRequest::CreateIfNeeded(
         String(), TextPosition(), test_case.url,
         KURL(ParsedURLStringTag(), test_case.base_url), Resource::kImage,
-        ReferrerPolicy(), FetchRequest::ResourceWidth(),
-        ClientHintsPreferences(), PreloadRequest::kRequestTypePreconnect);
+        ReferrerPolicy(), PreloadRequest::kDocumentIsReferrer,
+        FetchRequest::ResourceWidth(), ClientHintsPreferences(),
+        PreloadRequest::kRequestTypePreconnect);
     DCHECK(preload_request);
     if (test_case.is_cors)
       preload_request->SetCrossOrigin(kCrossOriginAttributeAnonymous);
     HTMLResourcePreloader* preloader =
         HTMLResourcePreloader::Create(dummy_page_holder_->GetDocument());
     preloader->Preload(std::move(preload_request), network_hints);
     ASSERT_TRUE(network_hints.DidPreconnect());
     ASSERT_EQ(test_case.is_cors, network_hints.IsCrossOrigin());
     ASSERT_EQ(test_case.is_https, network_hints.IsHTTPS());
   }
@@ skipping 12 matching lines @@
       {"http://example.test", "//example.com", true, false},
       {"https://example.test", "//example.com", false, true},
       {"https://example.test", "//example.com", true, true},
   };
 
   for (const auto& test_case : test_cases)
     Test(test_case);
 }
 
 }  // namespace blink