Fixup a bug about SVG text selection.

Source/core/layout/svg/LayoutSVGInlineText.cpp

Index: Source/core/layout/svg/LayoutSVGInlineText.cpp
diff --git a/Source/core/layout/svg/LayoutSVGInlineText.cpp b/Source/core/layout/svg/LayoutSVGInlineText.cpp
index 69553b53f7abf9be827f39d611b7d3ff8fb6bca5..1d7f3de0befae139c91d7ab8dbe7b9ae16559575 100644
--- a/Source/core/layout/svg/LayoutSVGInlineText.cpp
+++ b/Source/core/layout/svg/LayoutSVGInlineText.cpp
@@ -184,10 +184,13 @@ PositionWithAffinity LayoutSVGInlineText::positionForPoint(const LayoutPoint& po
             fragment.buildFragmentTransform(fragmentTransform);
             fragmentRect = fragmentTransform.mapRect(fragmentRect);
 
-            float distance = powf(fragmentRect.x() - absolutePoint.x(), 2) +
-                powf(fragmentRect.y() + fragmentRect.height() / 2 - absolutePoint.y(), 2);
+            float distance = 0;
+            if (!fragmentRect.contains(absolutePoint)) {
+                // Discard decimal point.
+                distance = floorf(fragmentRect.distanceFromPoint(absolutePoint));
+            }
 
-            if (distance < closestDistance) {
+            if (distance <= closestDistance) {
                 closestDistance = distance;
                 closestDistanceBox = textBox;
                 closestDistanceFragment = &fragment;