Fixup a bug about SVG text selection.

Source/platform/geometry/FloatRect.h

Index: Source/platform/geometry/FloatRect.h
diff --git a/Source/platform/geometry/FloatRect.h b/Source/platform/geometry/FloatRect.h
index 5e6d5e962916889afbfd634ec0f29054b608672e..96083cb7ff486be45f7cd5e6ecf81a50dbe4469d 100644
--- a/Source/platform/geometry/FloatRect.h
+++ b/Source/platform/geometry/FloatRect.h
@@ -132,6 +132,8 @@ public:
     FloatPoint maxXMinYCorner() const { return FloatPoint(m_location.x() + m_size.width(), m_location.y()); } // typically topRight
     FloatPoint minXMaxYCorner() const { return FloatPoint(m_location.x(), m_location.y() + m_size.height()); } // typically bottomLeft
     FloatPoint maxXMaxYCorner() const { return FloatPoint(m_location.x() + m_size.width(), m_location.y() + m_size.height()); } // typically bottomRight
+    FloatPoint leftEdgeMidPoint() const { return FloatPoint(m_location.x(), m_location.y() + m_size.height() / 2); }
+    FloatPoint rightEdgeMidPoint() const { return FloatPoint(m_location.x() + m_size.width(), m_location.y() +  m_size.height() / 2); }
 
     bool intersects(const FloatRect&) const;
     bool contains(const FloatRect&) const;