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

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/frame/RootFrameViewport.h"
 
 #include "core/frame/FrameView.h"
 #include "core/layout/ScrollAlignment.h"
 #include "platform/geometry/DoubleRect.h"
@@ skipping 75 matching lines @@
 
     DoublePoint clampedPosition = clampScrollPosition(position);
     ScrollableArea::setScrollPosition(clampedPosition, scrollType, scrollBehavior);
 }
 
 ScrollBehavior RootFrameViewport::scrollBehaviorStyle() const
 {
     return layoutViewport().scrollBehaviorStyle();
 }
 
-LayoutRect RootFrameViewport::scrollIntoView(const LayoutRect& rectInContent, const ScrollAlignment& alignX, const ScrollAlignment& alignY)
+LayoutRect RootFrameViewport::scrollIntoView(const LayoutRect& rectInContent, const ScrollAlignment& alignX, const ScrollAlignment& alignY, ScrollType scrollType)
 {
     // We want to move the rect into the viewport that excludes the scrollbars so we intersect
     // the visual viewport with the scrollbar-excluded frameView content rect. However, we don't
     // use visibleContentRect directly since it floors the scroll position. Instead, we use
     // ScrollAnimator::currentPosition and construct a LayoutRect from that.
 
     LayoutRect frameRectInContent = LayoutRect(
         layoutViewport().scrollAnimator()->currentPosition(),
         layoutViewport().visibleContentRect().size());
     LayoutRect visualRectInContent = LayoutRect(
         scrollOffsetFromScrollAnimators(),
         visualViewport().visibleContentRect().size());
 
     // Intersect layout and visual rects to exclude the scrollbar from the view rect.
     LayoutRect viewRectInContent = intersection(visualRectInContent, frameRectInContent);
     LayoutRect targetViewport =
         ScrollAlignment::getRectToExpose(viewRectInContent, rectInContent, alignX, alignY);
     DoublePoint targetOffset(targetViewport.x(), targetViewport.y());
 
-    setScrollPosition(targetOffset, ProgrammaticScroll);
+    setScrollPosition(targetOffset, scrollType, ScrollBehaviorInstant);
 
     // RootFrameViewport only changes the viewport relative to the document so we can't change the input
     // rect's location relative to the document origin.
     return rectInContent;
 }
 
 void RootFrameViewport::setScrollOffset(const IntPoint& offset, ScrollType scrollType)
 {
     setScrollOffset(DoublePoint(offset), scrollType);
 }
@@ skipping 161 matching lines @@
 }
 
 DEFINE_TRACE(RootFrameViewport)
 {
     visitor->trace(m_visualViewport);
     visitor->trace(m_layoutViewport);
     ScrollableArea::trace(visitor);
 }
 
 } // namespace blink