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

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 3663 matching lines @@
         m_horizontalScrollbarMode : m_verticalScrollbarMode;
 
     return mode == ScrollbarAuto || mode == ScrollbarAlwaysOn;
 }
 
 bool FrameView::shouldPlaceVerticalScrollbarOnLeft() const
 {
     return false;
 }
 
-LayoutRect FrameView::scrollIntoView(const LayoutRect& rectInContent, const ScrollAlignment& alignX, const ScrollAlignment& alignY)
+LayoutRect FrameView::scrollIntoView(const LayoutRect& rectInContent, const ScrollAlignment& alignX, const ScrollAlignment& alignY, ScrollType scrollType)
 {
     LayoutRect viewRect(visibleContentRect());
     LayoutRect exposeRect = ScrollAlignment::getRectToExpose(viewRect, rectInContent, alignX, alignY);
 
     double xOffset = exposeRect.x();
     double yOffset = exposeRect.y();
 
-    setScrollPosition(DoublePoint(xOffset, yOffset), ProgrammaticScroll);
+    setScrollPosition(DoublePoint(xOffset, yOffset), scrollType);
 
     // Scrolling the FrameView cannot change the input rect's location relative to the document.
     return rectInContent;
 }
 
 IntRect FrameView::scrollCornerRect() const
 {
     IntRect cornerRect;
 
     if (hasOverlayScrollbars())
@@ skipping 241 matching lines @@
 
     if (!graphicsLayer)
         return;
 
     PaintLayer::mapRectToPaintInvalidationBacking(localFrame->contentLayoutObject(), paintInvalidationContainer, viewRect);
 
     graphicsLayerTimingRequests.add(graphicsLayer, Vector<std::pair<int64_t, WebRect>>()).storedValue->value.append(std::make_pair(m_frame->frameID(), enclosingIntRect(viewRect)));
 }
 
 } // namespace blink