Clip PaintLayerScrollableArea::scrollIntoView return to layer bounds

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 1c356515a000fbe6f1ef14f2e71e5212e912f078..005e7121f129c27e30771e78c474ee5ae79bdaf7 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
@@ -1416,13 +1416,13 @@ LayoutRect PaintLayerScrollableArea::scrollIntoView(const LayoutRect& rect, cons
 
     DoublePoint clampedScrollPosition = clampScrollPosition(scrollPositionDouble() + roundedIntSize(r.location()));
     if (clampedScrollPosition == scrollPositionDouble())
-        return rect;
+        return LayoutRect(box().localToAbsoluteQuad(FloatQuad(FloatRect(intersection(layerBounds, localExposeRect))), UseTransforms).boundingBox());
 
     DoubleSize oldScrollOffset = adjustedScrollOffset();
     scrollToPosition(clampedScrollPosition, ScrollOffsetUnclamped, ScrollBehaviorInstant, scrollType);
     DoubleSize scrollOffsetDifference = adjustedScrollOffset() - oldScrollOffset;
     localExposeRect.move(-LayoutSize(scrollOffsetDifference));
-    return LayoutRect(box().localToAbsoluteQuad(FloatQuad(FloatRect(localExposeRect)), UseTransforms).boundingBox());
+    return LayoutRect(box().localToAbsoluteQuad(FloatQuad(FloatRect(intersection(layerBounds, localExposeRect))), UseTransforms).boundingBox());
 }
 
 void PaintLayerScrollableArea::updateScrollableAreaSet(bool hasOverflow)