element.scrollIntoView only scrolls the layout viewport

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved.
  *
  * 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 407 matching lines @@
     virtual LayoutUnit scrollTop() const;
     virtual LayoutUnit scrollWidth() const;
     virtual LayoutUnit scrollHeight() const;
     int pixelSnappedScrollWidth() const;
     int pixelSnappedScrollHeight() const;
     virtual void setScrollLeft(LayoutUnit);
     virtual void setScrollTop(LayoutUnit);
 
     void scrollToOffset(const DoubleSize&, ScrollBehavior = ScrollBehaviorInstant);
     void scrollByRecursively(const DoubleSize& delta, ScrollOffsetClamping = ScrollOffsetUnclamped);
-    void scrollRectToVisible(const LayoutRect&, const ScrollAlignment& alignX, const ScrollAlignment& alignY, ScrollType = ProgrammaticScroll);
+    // If makeVisibleInVisualViewport is set, the visual viewport will be scrolled
+    // if required to make the rect visible.
+    void scrollRectToVisible(const LayoutRect&, const ScrollAlignment& alignX, const ScrollAlignment& alignY, ScrollType = ProgrammaticScroll, bool makeVisibleInVisualViewport = true);
 
     LayoutRectOutsets marginBoxOutsets() const override { return m_marginBoxOutsets; }
     LayoutUnit marginTop() const override { return m_marginBoxOutsets.top(); }
     LayoutUnit marginBottom() const override { return m_marginBoxOutsets.bottom(); }
     LayoutUnit marginLeft() const override { return m_marginBoxOutsets.left(); }
     LayoutUnit marginRight() const override { return m_marginBoxOutsets.right(); }
     void setMarginTop(LayoutUnit margin) { m_marginBoxOutsets.setTop(margin); }
     void setMarginBottom(LayoutUnit margin) { m_marginBoxOutsets.setBottom(margin); }
     void setMarginLeft(LayoutUnit margin) { m_marginBoxOutsets.setLeft(margin); }
     void setMarginRight(LayoutUnit margin) { m_marginBoxOutsets.setRight(margin); }
@@ skipping 616 matching lines @@
         if (UNLIKELY(inlineBoxWrapper() != nullptr))
             deleteLineBoxWrapper();
     }
 
     ensureRareData().m_inlineBoxWrapper = boxWrapper;
 }
 
 } // namespace blink
 
 #endif // LayoutBox_h