Have BidiRunList destructor delete runs

Source/core/rendering/svg/SVGTextMetricsBuilder.cpp

Index: Source/core/rendering/svg/SVGTextMetricsBuilder.cpp
diff --git a/Source/core/rendering/svg/SVGTextMetricsBuilder.cpp b/Source/core/rendering/svg/SVGTextMetricsBuilder.cpp
index a9336c3e95e14e40a1b6289a77a4176ebc05f7dd..2889c76c0de26e7b2c56491f19964c5463dbf574 100644
--- a/Source/core/rendering/svg/SVGTextMetricsBuilder.cpp
+++ b/Source/core/rendering/svg/SVGTextMetricsBuilder.cpp
@@ -40,7 +40,6 @@ namespace blink {
 class SVGTextMetricsCalculator {
 public:
     SVGTextMetricsCalculator(RenderSVGInlineText*);
-    ~SVGTextMetricsCalculator();
 
     SVGTextMetrics computeMetricsForCharacter(unsigned textPosition);
     unsigned textLength() const { return static_cast<unsigned>(m_run.charactersLength()); }
@@ -90,11 +89,6 @@ SVGTextMetricsCalculator::SVGTextMetricsCalculator(RenderSVGInlineText* text)
         setupBidiRuns();
 }
 
-SVGTextMetricsCalculator::~SVGTextMetricsCalculator()
-{
-    m_bidiRuns.deleteRuns();
-}
-
 void SVGTextMetricsCalculator::setupBidiRuns()
 {
     RenderStyle* style = m_text->style();