Generate toCSSFooValue() for CSSCursorImageValue and CSSFontFaceSrcValue

Source/core/rendering/style/StylePendingImage.h

Index: Source/core/rendering/style/StylePendingImage.h
diff --git a/Source/core/rendering/style/StylePendingImage.h b/Source/core/rendering/style/StylePendingImage.h
index dd5acc70739c6b588147979f73228722c5716cac..e8e8e03faa6d5616a812b0ad4be059761e19397c 100644
--- a/Source/core/rendering/style/StylePendingImage.h
+++ b/Source/core/rendering/style/StylePendingImage.h
@@ -48,7 +48,7 @@ public:
     virtual PassRefPtr<CSSValue> cssValue() const { return m_value; }
     CSSImageValue* cssImageValue() const { return m_value->isImageValue() ? toCSSImageValue(m_value) : 0; }
     CSSImageGeneratorValue* cssImageGeneratorValue() const { return m_value->isImageGeneratorValue() ? static_cast<CSSImageGeneratorValue*>(m_value) : 0; }
-    CSSCursorImageValue* cssCursorImageValue() const { return m_value->isCursorImageValue() ? static_cast<CSSCursorImageValue*>(m_value) : 0; }
+    CSSCursorImageValue* cssCursorImageValue() const { return m_value->isCursorImageValue() ? toCSSCursorImageValue(m_value) : 0; }
     CSSImageSetValue* cssImageSetValue() const { return m_value->isImageSetValue() ? toCSSImageSetValue(m_value) : 0; }
 
     virtual LayoutSize imageSize(const RenderObject*, float /*multiplier*/) const OVERRIDE { return LayoutSize(); }