Revert BidiResolver::createBidiRunsForLine changes

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 2889c76c0de26e7b2c56491f19964c5463dbf574..be2daef7f40bff4faf3881d27355e95c94fa4dd2 100644
--- a/Source/core/rendering/svg/SVGTextMetricsBuilder.cpp
+++ b/Source/core/rendering/svg/SVGTextMetricsBuilder.cpp
@@ -40,6 +40,7 @@ namespace blink {
 class SVGTextMetricsCalculator {
 public:
     SVGTextMetricsCalculator(RenderSVGInlineText*);
+    ~SVGTextMetricsCalculator();
 
     SVGTextMetrics computeMetricsForCharacter(unsigned textPosition);
     unsigned textLength() const { return static_cast<unsigned>(m_run.charactersLength()); }
@@ -62,7 +63,6 @@ private:
     BidiCharacterRun* m_bidiRun;
     TextRun m_run;
     BidiResolver<TextRunIterator, BidiCharacterRun> m_bidiResolver;
-    BidiRunList<BidiCharacterRun> m_bidiRuns;
     bool m_isComplexText;
     float m_totalWidth;
     TextDirection m_textDirection;
@@ -89,6 +89,12 @@ SVGTextMetricsCalculator::SVGTextMetricsCalculator(RenderSVGInlineText* text)
         setupBidiRuns();
 }
 
+SVGTextMetricsCalculator::~SVGTextMetricsCalculator()
+{
+    if (m_bidiRun)
+        m_bidiResolver.runs().deleteRuns();
+}
+
 void SVGTextMetricsCalculator::setupBidiRuns()
 {
     RenderStyle* style = m_text->style();
@@ -102,8 +108,9 @@ void SVGTextMetricsCalculator::setupBidiRuns()
     m_bidiResolver.setPositionIgnoringNestedIsolates(TextRunIterator(&m_run, 0));
     const bool hardLineBreak = false;
     const bool reorderRuns = false;
-    m_bidiResolver.createBidiRunsForLine(TextRunIterator(&m_run, m_run.length()), m_bidiRuns, NoVisualOverride, hardLineBreak, reorderRuns);
-    m_bidiRun = m_bidiRuns.firstRun();
+    m_bidiResolver.createBidiRunsForLine(TextRunIterator(&m_run, m_run.length()), NoVisualOverride, hardLineBreak, reorderRuns);
+    BidiRunList<BidiCharacterRun>& bidiRuns = m_bidiResolver.runs();
+    m_bidiRun = bidiRuns.firstRun();
 }
 
 SVGTextMetrics SVGTextMetricsCalculator::computeMetricsForCharacterSimple(unsigned textPosition)