ScrollRectToVisible should bubble up through its layout container.

third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@gmail.com>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 1389 matching lines @@
         element->setInlineStyleProperty(CSSPropertyHeight, roundToInt(baseHeight + difference.height()), CSSPrimitiveValue::UnitType::Pixels);
     }
 
     document.updateStyleAndLayout();
 
     // FIXME (Radar 4118564): We should also autoscroll the window as necessary to keep the point under the cursor in view.
 }
 
 LayoutRect PaintLayerScrollableArea::scrollIntoView(const LayoutRect& rect, const ScrollAlignment& alignX, const ScrollAlignment& alignY, ScrollType scrollType)
 {
+    if (maximumScrollPosition() == minimumScrollPosition())
+        return rect;
+
     LayoutRect localExposeRect(box().absoluteToLocalQuad(FloatQuad(FloatRect(rect)), UseTransforms).boundingBox());
     localExposeRect.move(-box().borderLeft(), -box().borderTop());
     LayoutRect layerBounds(LayoutPoint(), LayoutSize(box().clientWidth(), box().clientHeight()));
     LayoutRect r = ScrollAlignment::getRectToExpose(layerBounds, localExposeRect, alignX, alignY);
 
     DoublePoint clampedScrollPosition = clampScrollPosition(scrollPositionDouble() + roundedIntSize(r.location()));
     if (clampedScrollPosition == scrollPositionDouble())
         return LayoutRect(box().localToAbsoluteQuad(FloatQuad(FloatRect(intersection(layerBounds, localExposeRect))), UseTransforms).boundingBox());

[bokan, 2016/09/13 15:32:29]

Sorry, probably should have asked this before but I don't understand how this
situation arises (at least in your test case and the bug report). How come the
intersection results in an empty rect? In an unscrollable layer, shouldn't
layerBounds contain the localExposeRect?

Taking your test as the example, the layer should be the position: absolute div
and since it has no explicit height, the box should grow to accommodate the
children's height. So I would expect layerBounds and the expose rect to be
(roughly) the same.

[sunyunjia, 2016/09/13 16:00:44]

As I investigated, for my test case and the website in the bug report,
seems the layerBounds box doesn't grow to accommodate the children's
height due to "absolute" position (you can try
document.body.offsetHeight at the bug webpage). It just ignores its
"absolute" children when calculating size (or maybe we should solve
this intrinsic problem?). When the element to be scrolled is out of
view and scroll is not allowed, the intersection will be empty.

 
     DoubleSize oldScrollOffset = adjustedScrollOffset();
     scrollToPosition(clampedScrollPosition, ScrollOffsetUnclamped, ScrollBehaviorInstant, scrollType);
     DoubleSize scrollOffsetDifference = adjustedScrollOffset() - oldScrollOffset;
     localExposeRect.move(-LayoutSize(scrollOffsetDifference));
     return LayoutRect(box().localToAbsoluteQuad(FloatQuad(FloatRect(intersection(layerBounds, localExposeRect))), UseTransforms).boundingBox());
 }
 
 void PaintLayerScrollableArea::updateScrollableAreaSet(bool hasOverflow)
 {
@@ skipping 340 matching lines @@
 
 void PaintLayerScrollableArea::DelayScrollPositionClampScope::clampScrollableAreas()
 {
     for (auto& scrollableArea : *s_needsClamp)
         scrollableArea->clampScrollPositionsAfterLayout();
     delete s_needsClamp;
     s_needsClamp = nullptr;
 }
 
 } // namespace blink