LayoutBox::scrollRectToVisible doesn't respect overflow:hidden property.

third_party/WebKit/Source/core/layout/LayoutTextControlSingleLine.h

 /*
  * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 17 matching lines @@
 
 namespace blink {
 
 class HTMLInputElement;
 
 class LayoutTextControlSingleLine : public LayoutTextControl {
 public:
     LayoutTextControlSingleLine(HTMLInputElement*);
     ~LayoutTextControlSingleLine() override;
     // FIXME: Move createInnerEditorStyle() to TextControlInnerEditorElement.
-    PassRefPtr<ComputedStyle> createInnerEditorStyle(const ComputedStyle& startStyle) const final;
+    PassRefPtr<ComputedStyle> createInnerEditorStyle(const ComputedStyle& startStyle) final;
 
     void capsLockStateMayHaveChanged();
 
 protected:
     virtual void centerContainerIfNeeded(LayoutBox*) const { }
     virtual LayoutUnit computeLogicalHeightLimit() const;
     Element* containerElement() const;
     Element* editingViewPortElement() const;
     HTMLInputElement* inputElement() const;
 
 private:
+    void addScrollbarPeudoStyle();
     bool hasControlClip() const final;
     LayoutRect controlClipRect(const LayoutPoint&) const final;
     bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectTextField || LayoutTextControl::isOfType(type); }
 
     void paint(const PaintInfo&, const LayoutPoint&) override;
     void layout() override;
 
     bool nodeAtPoint(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) final;
 
     void autoscroll(const IntPoint&) final;
@@ skipping 36 matching lines @@
         return orientation == HorizontalScrollbar;
     }
     bool scrollsOverflowX() const override { return hasOverflowClip(); }
     bool scrollsOverflowY() const override { return false; }
     bool hasLineIfEmpty() const override { return true; }
 };
 
 }
 
 #endif