Invalid caret at the end of line in overtype mode

Source/core/editing/VisibleUnits.cpp

Index: Source/core/editing/VisibleUnits.cpp
diff --git a/Source/core/editing/VisibleUnits.cpp b/Source/core/editing/VisibleUnits.cpp
index 0c2675bfbba8c1460c609bdfbd094ae922d7c708..a2b04e8cc7319d67d37dd927fe77539d97adeb8e 100644
--- a/Source/core/editing/VisibleUnits.cpp
+++ b/Source/core/editing/VisibleUnits.cpp
@@ -896,6 +896,11 @@ bool isEndOfLine(const VisiblePosition &p)
     return p.isNotNull() && p == endOfLine(p);
 }
 
+bool isLogicalEndOfLine(const VisiblePosition &p)
+{
+    return p.isNotNull() && p == logicalEndOfLine(p);
+}
+
 static inline IntPoint absoluteLineDirectionPointToLocalPointInBlock(RootInlineBox* root, int lineDirectionPoint)
 {
     ASSERT(root);