"Find" scrolling should be smoothly animated.

third_party/WebKit/Source/core/layout/LayoutBox.h

Index: third_party/WebKit/Source/core/layout/LayoutBox.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.h b/third_party/WebKit/Source/core/layout/LayoutBox.h
index 9bccd21192a0b541172769db47c5eb40d013a712..3efee73ca59493d3e45a6a28fe1c22ba6abc6165 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.h
@@ -1575,6 +1575,13 @@ class CORE_EXPORT LayoutBox : public LayoutBoxModelObject {
       const Length& margin_logical_bottom,
       LogicalExtentComputedValues&) const;
 
+  void ScrollRectToVisibleRecursive(const LayoutRect&,
+                                    const ScrollAlignment& align_x,
+                                    const ScrollAlignment& align_y,
+                                    ScrollType = kProgrammaticScroll,
+                                    bool make_visible_in_visual_viewport = true,
+                                    ScrollBehavior = kScrollBehaviorAuto);
+
   LayoutUnit FillAvailableMeasure(LayoutUnit available_logical_width) const;
   LayoutUnit FillAvailableMeasure(LayoutUnit available_logical_width,
                                   LayoutUnit& margin_start,