Extract helper function.

third_party/WebKit/Source/core/layout/svg/line/SVGInlineTextBox.cpp

Index: third_party/WebKit/Source/core/layout/svg/line/SVGInlineTextBox.cpp
diff --git a/third_party/WebKit/Source/core/layout/svg/line/SVGInlineTextBox.cpp b/third_party/WebKit/Source/core/layout/svg/line/SVGInlineTextBox.cpp
index 15c6eb2d15b29f6d32caa7f43eab8c84169769e2..2c9c5dcf7dc07d516f0262bdda03f597d815cc0f 100644
--- a/third_party/WebKit/Source/core/layout/svg/line/SVGInlineTextBox.cpp
+++ b/third_party/WebKit/Source/core/layout/svg/line/SVGInlineTextBox.cpp
@@ -231,7 +231,7 @@ bool SVGInlineTextBox::mapStartEndPositionsIntoFragmentCoordinates(
 
 void SVGInlineTextBox::paintDocumentMarker(GraphicsContext&,
                                            const LayoutPoint&,
-                                           DocumentMarker*,
+                                           const DocumentMarker&,
                                            const ComputedStyle&,
                                            const Font&,
                                            bool) const {
@@ -242,7 +242,7 @@ void SVGInlineTextBox::paintDocumentMarker(GraphicsContext&,
 void SVGInlineTextBox::paintTextMatchMarkerForeground(
     const PaintInfo& paintInfo,
     const LayoutPoint& point,
-    DocumentMarker* marker,
+    const DocumentMarker& marker,
     const ComputedStyle& style,
     const Font& font) const {
   SVGInlineTextBoxPainter(*this).paintTextMatchMarkerForeground(
@@ -252,7 +252,7 @@ void SVGInlineTextBox::paintTextMatchMarkerForeground(
 void SVGInlineTextBox::paintTextMatchMarkerBackground(
     const PaintInfo& paintInfo,
     const LayoutPoint& point,
-    DocumentMarker* marker,
+    const DocumentMarker& marker,
     const ComputedStyle& style,
     const Font& font) const {
   SVGInlineTextBoxPainter(*this).paintTextMatchMarkerBackground(