Set proper referrer for css resource fetching

Source/core/html/HTMLTablePartElement.cpp

Index: Source/core/html/HTMLTablePartElement.cpp
diff --git a/Source/core/html/HTMLTablePartElement.cpp b/Source/core/html/HTMLTablePartElement.cpp
index 8146ae4181dd70f47a87d4fc148cad51f49046bc..d08f01051ac1726c893dc72040bc4dc468f16ab5 100644
--- a/Source/core/html/HTMLTablePartElement.cpp
+++ b/Source/core/html/HTMLTablePartElement.cpp
@@ -52,8 +52,11 @@ void HTMLTablePartElement::collectStyleForPresentationAttribute(const QualifiedN
         addHTMLColorToStyle(style, CSSPropertyBackgroundColor, value);
     else if (name == backgroundAttr) {
         String url = stripLeadingAndTrailingHTMLSpaces(value);
-        if (!url.isEmpty())
-            style->setProperty(CSSProperty(CSSPropertyBackgroundImage, CSSImageValue::create(url, document().completeURL(url))));
+        if (!url.isEmpty()) {
+            RefPtrWillBeRawPtr<CSSImageValue> imageValue = CSSImageValue::create(url, document().completeURL(url));
+            imageValue->setReferrer(document().outgoingReferrer());
+            style->setProperty(CSSProperty(CSSPropertyBackgroundImage, imageValue.release()));
+        }
     } else if (name == valignAttr) {
         if (equalIgnoringCase(value, "top"))
             addPropertyToPresentationAttributeStyle(style, CSSPropertyVerticalAlign, CSSValueTop);