Avoiding multiple text/string parsing while creating TextRun

Source/platform/text/TextRun.h

Index: Source/platform/text/TextRun.h
diff --git a/Source/platform/text/TextRun.h b/Source/platform/text/TextRun.h
old mode 100644
new mode 100755
index 81657d3b12a370d2e24657a3e2bc5bcf73d9f91c..8b45a5cd04ed9a672411fb3310be5306176c8e4c
--- a/Source/platform/text/TextRun.h
+++ b/Source/platform/text/TextRun.h
@@ -27,6 +27,7 @@
 #include "platform/PlatformExport.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/text/TextDirection.h"
+#include "platform/text/TextPath.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
@@ -76,6 +77,7 @@ public:
         , m_applyWordRounding((roundingHacks & WordRounding) && s_allowsRoundingHacks)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textCodePath(AutoPath)
     {
         m_data.characters8 = c;
     }
@@ -96,6 +98,7 @@ public:
         , m_applyWordRounding((roundingHacks & WordRounding) && s_allowsRoundingHacks)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textCodePath(AutoPath)
     {
         m_data.characters16 = c;
     }
@@ -115,6 +118,7 @@ public:
         , m_applyWordRounding((roundingHacks & WordRounding) && s_allowsRoundingHacks)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textCodePath(AutoPath)
     {
         if (!m_charactersLength) {
             m_is8Bit = true;
@@ -143,6 +147,7 @@ public:
         , m_applyWordRounding((roundingHacks & WordRounding) && s_allowsRoundingHacks)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textCodePath(AutoPath)
     {
         if (!m_charactersLength) {
             m_is8Bit = true;
@@ -170,6 +175,16 @@ public:
         return result;
     }
 
+    void setCharacterScanForCodePathValue(CodePath textCodePath)
+    {
+        m_textCodePath = textCodePath;
+
+#if ENABLE(SVG_FONTS)
+        if (renderingContext())
+            m_textCodePath = SimplePath;
+#endif
+    }
+
     UChar operator[](unsigned i) const { ASSERT_WITH_SECURITY_IMPLICATION(i < m_len); return is8Bit() ? m_data.characters8[i] :m_data.characters16[i]; }
     const LChar* data8(unsigned i) const { ASSERT_WITH_SECURITY_IMPLICATION(i < m_len); ASSERT(is8Bit()); return &m_data.characters8[i]; }
     const UChar* data16(unsigned i) const { ASSERT_WITH_SECURITY_IMPLICATION(i < m_len); ASSERT(!is8Bit()); return &m_data.characters16[i]; }
@@ -203,6 +218,7 @@ public:
     bool ltr() const { return m_direction == LTR; }
     bool directionalOverride() const { return m_directionalOverride; }
     bool characterScanForCodePath() const { return m_characterScanForCodePath; }
+    CodePath characterScanForCodePathValue() const { return m_textCodePath; }
     bool applyRunRounding() const { return m_applyRunRounding; }
     bool applyWordRounding() const { return m_applyWordRounding; }
     bool spacingDisabled() const { return m_disableSpacing; }
@@ -255,6 +271,7 @@ private:
     unsigned m_applyWordRounding : 1;
     unsigned m_disableSpacing : 1;
     unsigned m_tabSize;
+    CodePath m_textCodePath;
     RefPtr<RenderingContext> m_renderingContext;
 };