Pass start/length at InlineTextBox construction time.

Source/core/rendering/svg/SVGInlineTextBox.cpp

Index: Source/core/rendering/svg/SVGInlineTextBox.cpp
diff --git a/Source/core/rendering/svg/SVGInlineTextBox.cpp b/Source/core/rendering/svg/SVGInlineTextBox.cpp
index a8f048d7939aa7c6d34fb4dea6a9bad5dc5f5c26..41c93bc240111b1136263d63c093caf4b7e1b0a4 100644
--- a/Source/core/rendering/svg/SVGInlineTextBox.cpp
+++ b/Source/core/rendering/svg/SVGInlineTextBox.cpp
@@ -51,8 +51,8 @@ struct ExpectedSVGInlineTextBoxSize : public InlineTextBox {
 
 COMPILE_ASSERT(sizeof(SVGInlineTextBox) == sizeof(ExpectedSVGInlineTextBoxSize), SVGInlineTextBox_is_not_of_expected_size);
 
-SVGInlineTextBox::SVGInlineTextBox(RenderObject& object)
-    : InlineTextBox(object)
+SVGInlineTextBox::SVGInlineTextBox(RenderObject& object, int start, unsigned short length)
+    : InlineTextBox(object, start, length)
     , m_logicalHeight(0)
     , m_startsNewTextChunk(false)
 {