[SVG Fonts] Fix <font-face> element leak document

Source/core/rendering/svg/SVGTextRunRenderingContext.cpp

Index: Source/core/rendering/svg/SVGTextRunRenderingContext.cpp
diff --git a/Source/core/rendering/svg/SVGTextRunRenderingContext.cpp b/Source/core/rendering/svg/SVGTextRunRenderingContext.cpp
index fe7685b0d2e85ff96d410a2c13fc7fc1de8932b4..3c2b38925df950e1fab5258e5d7f852c4e1f0681 100644
--- a/Source/core/rendering/svg/SVGTextRunRenderingContext.cpp
+++ b/Source/core/rendering/svg/SVGTextRunRenderingContext.cpp
@@ -46,6 +46,10 @@ static inline const SVGFontData* svgFontAndFontFaceElementForFontData(const Simp
     RefPtr<CustomFontData> customFontData = fontData->customFontData();
     const SVGFontData* svgFontData = static_cast<const SVGFontData*>(customFontData.get());
 
+    // FIXME crbug.com/359380 : The current editing impl references the font after the svg font nodes are removed.
+    if (svgFontData->shouldSkipDrawing())
+        return 0;
+
     fontFace = svgFontData->svgFontFaceElement();
     ASSERT(fontFace);