BackgroundImage incorrectly returns empty url() when created on-the-fly

Source/core/css/CSSCrossfadeValue.cpp

Index: Source/core/css/CSSCrossfadeValue.cpp
diff --git a/Source/core/css/CSSCrossfadeValue.cpp b/Source/core/css/CSSCrossfadeValue.cpp
index 43536472b972fa8c1adccba67c7ba68eaea491a5..a18ace72e11aa8330dc92e6c404047ca07ee9009 100644
--- a/Source/core/css/CSSCrossfadeValue.cpp
+++ b/Source/core/css/CSSCrossfadeValue.cpp
@@ -117,6 +117,20 @@ String CSSCrossfadeValue::customCSSText() const
     return result.toString();
 }
 
+PassRefPtrWillBeRawPtr<CSSCrossfadeValue> CSSCrossfadeValue::valueWithURLMadeAbsolute()
+{
+    if (m_fromValue->isImageValue() && m_toValue->isImageValue()) {
+        return CSSCrossfadeValue::create(toCSSImageValue(*m_fromValue).valueWithURLMadeAbsolute(), toCSSImageValue(*m_toValue).valueWithURLMadeAbsolute(), m_percentageValue);
+    }
+    if (m_fromValue->isImageValue()) {
+        return CSSCrossfadeValue::create(toCSSImageValue(*m_fromValue).valueWithURLMadeAbsolute(), m_toValue, m_percentageValue);
+    }
+    if (m_toValue->isImageValue()) {
+        return CSSCrossfadeValue::create(m_fromValue, toCSSImageValue(*m_toValue).valueWithURLMadeAbsolute(), m_percentageValue);
+    }
+    return this;

[alancutter (OOO until 2018), 2015/09/18 02:55:09]

This can be simplified if you use temporary variables for from and to.

[nainar, 2015/09/18 03:47:25]

Done.

+}
+
 IntSize CSSCrossfadeValue::fixedSize(const LayoutObject* layoutObject)
 {
     Image* fromImage = renderableImageForCSSValue(m_fromValue.get(), layoutObject);