Implement Element.scrollIntoView for scroll-behavior: smooth.

third_party/WebKit/Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 49 matching lines @@
 class EventHandlerRegistry;
 class FocusController;
 class Frame;
 class OverscrollController;
 struct PageScaleConstraints;
 class PageScaleConstraintsSet;
 class PluginData;
 class PointerLockController;
 class ScopedPageSuspender;
 class ScrollingCoordinator;
+class SmoothScrollSequencer;
 class Settings;
 class ConsoleMessageStorage;
 class SpellCheckerClient;
 class TopDocumentRootScrollerController;
 class ValidationMessageClient;
 class VisualViewport;
 class WebLayerTreeView;
 
 typedef uint64_t LinkHash;
 
@@ skipping 91 matching lines @@
   PointerLockController& GetPointerLockController() const {
     return *pointer_lock_controller_;
   }
   ValidationMessageClient& GetValidationMessageClient() const {
     return *validation_message_client_;
   }
   void SetValidationMessageClient(ValidationMessageClient*);
 
   ScrollingCoordinator* GetScrollingCoordinator();
 
+  SmoothScrollSequencer* GetSmoothScrollSequencer();
+
   ClientRectList* NonFastScrollableRects(const LocalFrame*);
 
   Settings& GetSettings() const { return *settings_; }
 
   UseCounter& GetUseCounter() { return use_counter_; }
   Deprecation& GetDeprecation() { return deprecation_; }
   HostsUsingFeatures& GetHostsUsingFeatures() { return hosts_using_features_; }
 
   void SetWindowFeatures(const WebWindowFeatures& features) {
     window_features_ = features;
@@ skipping 112 matching lines @@
   Member<PageAnimator> animator_;
   const Member<AutoscrollController> autoscroll_controller_;
   Member<ChromeClient> chrome_client_;
   const Member<DragCaret> drag_caret_;
   const Member<DragController> drag_controller_;
   const Member<FocusController> focus_controller_;
   const Member<ContextMenuController> context_menu_controller_;
   const std::unique_ptr<PageScaleConstraintsSet> page_scale_constraints_set_;
   const Member<PointerLockController> pointer_lock_controller_;
   Member<ScrollingCoordinator> scrolling_coordinator_;
+  Member<SmoothScrollSequencer> smooth_scroll_sequencer_;
   const Member<BrowserControls> browser_controls_;
   const Member<ConsoleMessageStorage> console_message_storage_;
   const Member<EventHandlerRegistry> event_handler_registry_;
   const Member<TopDocumentRootScrollerController>
       global_root_scroller_controller_;
   const Member<VisualViewport> visual_viewport_;
   const Member<OverscrollController> overscroll_controller_;
 
   // Typically, the main frame and Page should both be owned by the embedder,
   // which must call Page::willBeDestroyed() prior to destroying Page. This
@@ skipping 42 matching lines @@
 #endif
 
   int subframe_count_;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT Supplement<Page>;
 
 }  // namespace blink
 
 #endif  // Page_h