ScrollRectToVisible should bubble up through its layout container.

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

Index: third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
index f3710f0d20314c96e033feab385d84e7201682cc..02651493bd02da8ba2ce629dce3a5d8ba00629f5 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
@@ -1413,8 +1413,11 @@ LayoutRect PaintLayerScrollableArea::scrollIntoView(const LayoutRect& rect, cons
     LayoutRect r = ScrollAlignment::getRectToExpose(layerBounds, localExposeRect, alignX, alignY);
 
     DoublePoint clampedScrollPosition = clampScrollPosition(scrollPositionDouble() + roundedIntSize(r.location()));
-    if (clampedScrollPosition == scrollPositionDouble())
+    if (clampedScrollPosition == scrollPositionDouble()) {
+        if (scrollPositionDouble() + roundedIntSize(r.location()) != scrollPositionDouble())

[bokan, 2016/09/13 14:38:46]

There's no need to get this far. Just check at the beginning of the method if
maximumScrollPosition == minimumScrollPosition and return rect if so.

+            return rect;
         return LayoutRect(box().localToAbsoluteQuad(FloatQuad(FloatRect(intersection(layerBounds, localExposeRect))), UseTransforms).boundingBox());
+    }
 
     DoubleSize oldScrollOffset = adjustedScrollOffset();
     scrollToPosition(clampedScrollPosition, ScrollOffsetUnclamped, ScrollBehaviorInstant, scrollType);