Implement Element.scrollIntoView for scroll-behavior: smooth.

third_party/WebKit/Source/core/frame/FrameView.h

 /*
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
              (C) 1998 Waldo Bastian (bastian@kde.org)
              (C) 1998, 1999 Torben Weis (weis@kde.org)
              (C) 1999 Lars Knoll (knoll@kde.org)
              (C) 1999 Antti Koivisto (koivisto@kde.org)
    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights
    reserved.
 
    This library is free software; you can redistribute it and/or
@@ skipping 28 matching lines @@
 #include "core/paint/PaintPhase.h"
 #include "core/paint/ScrollbarManager.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/Widget.h"
 #include "platform/animation/CompositorAnimationHost.h"
 #include "platform/animation/CompositorAnimationTimeline.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/Color.h"
 #include "platform/graphics/GraphicsLayerClient.h"
+#include "platform/scroll/ProgrammaticScrollCoordinator.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "platform/scroll/Scrollbar.h"
 #include "public/platform/ShapeProperties.h"
 #include "public/platform/WebDisplayMode.h"
 #include "public/platform/WebRect.h"
 #include "wtf/Allocator.h"
 #include "wtf/AutoReset.h"
 #include "wtf/Forward.h"
 #include "wtf/HashSet.h"
 #include "wtf/ListHashSet.h"
@@ skipping 386 matching lines @@
   CompositorAnimationTimeline* compositorAnimationTimeline() const override;
   LayoutBox* layoutBox() const override;
   FloatQuad localToVisibleContentQuad(const FloatQuad&,
                                       const LayoutObject*,
                                       unsigned = 0) const final;
   RefPtr<WebTaskRunner> getTimerTaskRunner() const final;
 
   LayoutRect scrollIntoView(const LayoutRect& rectInContent,
                             const ScrollAlignment& alignX,
                             const ScrollAlignment& alignY,
-                            ScrollType = ProgrammaticScroll) override;
+                            ScrollType = ProgrammaticScroll,
+                            ScrollBehavior = ScrollBehaviorAuto) override;
 
   // The window that hosts the FrameView. The FrameView will communicate scrolls
   // and repaints to the host window in the window's coordinate space.
   HostWindow* getHostWindow() const;
 
+  ProgrammaticScrollCoordinator* getProgrammaticScrollCoordinator()
+      const override;
+
   typedef HeapHashSet<Member<Widget>> ChildrenWidgetSet;
 
   // Functions for child manipulation and inspection.
   void setParent(Widget*) override;
   void removeChild(Widget*);
   void addChild(Widget*);
   const ChildrenWidgetSet* children() const { return &m_children; }
 
   // If the scroll view does not use a native widget, then it will have
   // cross-platform Scrollbars. These functions can be used to obtain those
@@ skipping 770 matching lines @@
                   widget.isFrameView());
 DEFINE_TYPE_CASTS(FrameView,
                   ScrollableArea,
                   scrollableArea,
                   scrollableArea->isFrameView(),
                   scrollableArea.isFrameView());
 
 }  // namespace blink
 
 #endif  // FrameView_h