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 34 matching lines @@
 #include "platform/RuntimeEnabledFeatures.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/CompositorElementId.h"
 #include "platform/graphics/GraphicsLayerClient.h"
 #include "platform/scroll/ScrollTypes.h"
 #include "platform/scroll/Scrollbar.h"
+#include "platform/scroll/SmoothScrollSequencer.h"
 #include "platform/wtf/Allocator.h"
 #include "platform/wtf/AutoReset.h"
 #include "platform/wtf/Forward.h"
 #include "platform/wtf/HashSet.h"
 #include "platform/wtf/ListHashSet.h"
 #include "platform/wtf/text/WTFString.h"
 #include "public/platform/ShapeProperties.h"
 #include "public/platform/WebDisplayMode.h"
 #include "public/platform/WebRect.h"
 
@@ skipping 403 matching lines @@
   CompositorAnimationTimeline* GetCompositorAnimationTimeline() const override;
   LayoutBox* GetLayoutBox() const override;
   FloatQuad LocalToVisibleContentQuad(const FloatQuad&,
                                       const LayoutObject*,
                                       unsigned = 0) const final;
   RefPtr<WebTaskRunner> GetTimerTaskRunner() const final;
 
   LayoutRect ScrollIntoView(const LayoutRect& rect_in_content,
                             const ScrollAlignment& align_x,
                             const ScrollAlignment& align_y,
-                            ScrollType = kProgrammaticScroll) override;
+                            ScrollType = kProgrammaticScroll,
+                            bool is_smooth = false) override;
 
   // The window that hosts the FrameView. The FrameView will communicate scrolls
   // and repaints to the host window in the window's coordinate space.
   PlatformChromeClient* GetChromeClient() const;
 
+  SmoothScrollSequencer* GetSmoothScrollSequencer() const override;
+
   typedef HeapHashSet<Member<FrameOrPlugin>> ChildrenSet;
+

[bokan, 2017/05/15 17:15:28]

Nit: remove newline

[sunyunjia, 2017/05/19 16:24:29]

Done.

   typedef HeapHashSet<Member<Scrollbar>> ScrollbarsSet;
 
   // Functions for child manipulation and inspection.
   bool IsSelfVisible() const {
     return self_visible_;
   }  // Whether or not we have been explicitly marked as visible or not.
   bool IsParentVisible() const {
     return parent_visible_;
   }  // Whether or not our parent is visible.
   bool IsVisible() const {
@@ skipping 784 matching lines @@
                   frame_or_plugin.IsFrameView());
 DEFINE_TYPE_CASTS(FrameView,
                   ScrollableArea,
                   scrollableArea,
                   scrollableArea->IsFrameView(),
                   scrollableArea.IsFrameView());
 
 }  // namespace blink
 
 #endif  // FrameView_h