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..181beef584f24e349fd577bef973030eece62042 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().url().strippedForUseAsReferrer());

[abarth-chromium, 2014/04/18 16:36:49]

document().outgoingReferrer()

[bashi, 2014/04/22 01:22:55]

Done.

+            style->setProperty(CSSProperty(CSSPropertyBackgroundImage, imageValue.release()));
+        }
     } else if (name == valignAttr) {
         if (equalIgnoringCase(value, "top"))
             addPropertyToPresentationAttributeStyle(style, CSSPropertyVerticalAlign, CSSValueTop);