The start and end arguments should be unsigned long in setSelectionRange() function

Source/core/html/HTMLTextFormControlElement.h

Index: Source/core/html/HTMLTextFormControlElement.h
diff --git a/Source/core/html/HTMLTextFormControlElement.h b/Source/core/html/HTMLTextFormControlElement.h
index 906661dfbc87adbeddf081002595d84ecfed4abc..027bd1282b513be13926174055ded455a8c9d281 100644
--- a/Source/core/html/HTMLTextFormControlElement.h
+++ b/Source/core/html/HTMLTextFormControlElement.h
@@ -68,8 +68,8 @@ public:
 
     VisiblePosition visiblePositionForIndex(int) const;
     int indexForVisiblePosition(const VisiblePosition&) const;
-    int selectionStart() const;
-    int selectionEnd() const;
+    unsigned selectionStart() const;
+    unsigned selectionEnd() const;
     const AtomicString& selectionDirection() const;
     void setSelectionStart(int);
     void setSelectionEnd(int);
@@ -77,8 +77,8 @@ public:
     void select(NeedToDispatchSelectEvent = DispatchSelectEvent);
     virtual void setRangeText(const String& replacement, ExceptionState&);
     virtual void setRangeText(const String& replacement, unsigned start, unsigned end, const String& selectionMode, ExceptionState&);
-    void setSelectionRange(int start, int end, const String& direction);
-    void setSelectionRange(int start, int end, TextFieldSelectionDirection = SelectionHasNoDirection, NeedToDispatchSelectEvent = DispatchSelectEvent, SelectionOption = ChangeSelection);
+    void setSelectionRange(unsigned start, unsigned end, const String& direction);
+    void setSelectionRange(unsigned start, unsigned end, TextFieldSelectionDirection = SelectionHasNoDirection, NeedToDispatchSelectEvent = DispatchSelectEvent, SelectionOption = ChangeSelection);
     PassRefPtrWillBeRawPtr<Range> selection() const;
 
     virtual bool supportsAutocapitalize() const = 0;
@@ -116,9 +116,8 @@ protected:
 
     void parseAttribute(const QualifiedName&, const AtomicString&) override;
 
-    void cacheSelection(int start, int end, TextFieldSelectionDirection direction)
+    void cacheSelection(unsigned start, unsigned end, TextFieldSelectionDirection direction)
     {
-        ASSERT(start >= 0);
         m_cachedSelectionStart = start;
         m_cachedSelectionEnd = end;
         m_cachedSelectionDirection = direction;
@@ -137,8 +136,8 @@ protected:
     void copyNonAttributePropertiesFromElement(const Element&) override;
 
 private:
-    int computeSelectionStart() const;
-    int computeSelectionEnd() const;
+    unsigned computeSelectionStart() const;
+    unsigned computeSelectionEnd() const;
     TextFieldSelectionDirection computeSelectionDirection() const;
 
     void dispatchFocusEvent(Element* oldFocusedElement, WebFocusType, InputDevice* sourceDevice) final;
@@ -157,8 +156,8 @@ private:
     String m_textAsOfLastFormControlChangeEvent;
     bool m_lastChangeWasUserEdit;
 
-    int m_cachedSelectionStart;
-    int m_cachedSelectionEnd;
+    unsigned m_cachedSelectionStart;
+    unsigned m_cachedSelectionEnd;
     TextFieldSelectionDirection m_cachedSelectionDirection;
 };