Remove unsafe getFontMetrics methods

third_party/WebKit/Source/core/paint/ListMarkerPainter.cpp

Index: third_party/WebKit/Source/core/paint/ListMarkerPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/ListMarkerPainter.cpp b/third_party/WebKit/Source/core/paint/ListMarkerPainter.cpp
index 867626938279b2802748dadaea8ad996e117ecdf..eb30da5223a8791a8efb5b415f3d8845dadaede8 100644
--- a/third_party/WebKit/Source/core/paint/ListMarkerPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/ListMarkerPainter.cpp
@@ -130,9 +130,11 @@ void ListMarkerPainter::paint(const PaintInfo& paintInfo,
 
   TextRunPaintInfo textRunPaintInfo(textRun);
   textRunPaintInfo.bounds = marker;
+  const SimpleFontData* fontData =
+      m_layoutListMarker.style()->font().primaryFont();
   IntPoint textOrigin = IntPoint(
       marker.x(),
-      marker.y() + m_layoutListMarker.style()->getFontMetrics().ascent());
+      marker.y() + (fontData ? fontData->getFontMetrics().ascent() : 0));
 
   // Text is not arbitrary. We can judge whether it's RTL from the first
   // character, and we only need to handle the direction RightToLeft for now.