Implement Element.scrollIntoView for scroll-behavior: smooth.

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

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 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 43 matching lines @@
 #include "core/page/ValidationMessageClient.h"
 #include "core/page/scrolling/OverscrollController.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/page/scrolling/TopDocumentRootScrollerController.h"
 #include "core/paint/PaintLayer.h"
 #include "core/probe/CoreProbes.h"
 #include "platform/WebFrameScheduler.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/loader/fetch/ResourceFetcher.h"
 #include "platform/plugins/PluginData.h"
+#include "platform/scroll/SmoothScrollSequencer.h"
 #include "public/platform/Platform.h"
 
 namespace blink {
 
 // Set of all live pages; includes internal Page objects that are
 // not observable from scripts.
 static Page::PageSet& allPages() {
   DEFINE_STATIC_LOCAL(Page::PageSet, pages, ());
   return pages;
 }
@@ skipping 83 matching lines @@
              : ViewportDescription();
 }
 
 ScrollingCoordinator* Page::scrollingCoordinator() {
   if (!m_scrollingCoordinator && m_settings->getAcceleratedCompositingEnabled())
     m_scrollingCoordinator = ScrollingCoordinator::create(this);
 
   return m_scrollingCoordinator.get();
 }
 
+SmoothScrollSequencer* Page::smoothScrollSequencer() {
+  if (!m_smoothScrollSequencer)
+    m_smoothScrollSequencer = SmoothScrollSequencer::create();
+
+  return m_smoothScrollSequencer.get();
+}
+
 PageScaleConstraintsSet& Page::pageScaleConstraintsSet() {
   return *m_pageScaleConstraintsSet;
 }
 
 const PageScaleConstraintsSet& Page::pageScaleConstraintsSet() const {
   return *m_pageScaleConstraintsSet;
 }
 
 BrowserControls& Page::browserControls() {
   return *m_browserControls;
@@ skipping 433 matching lines @@
 DEFINE_TRACE(Page) {
   visitor->trace(m_animator);
   visitor->trace(m_autoscrollController);
   visitor->trace(m_chromeClient);
   visitor->trace(m_dragCaret);
   visitor->trace(m_dragController);
   visitor->trace(m_focusController);
   visitor->trace(m_contextMenuController);
   visitor->trace(m_pointerLockController);
   visitor->trace(m_scrollingCoordinator);
+  visitor->trace(m_smoothScrollSequencer);
   visitor->trace(m_browserControls);
   visitor->trace(m_consoleMessageStorage);
   visitor->trace(m_eventHandlerRegistry);
   visitor->trace(m_globalRootScrollerController);
   visitor->trace(m_visualViewport);
   visitor->trace(m_overscrollController);
   visitor->trace(m_mainFrame);
   visitor->trace(m_validationMessageClient);
   visitor->trace(m_useCounter);
   Supplementable<Page>::trace(visitor);
@@ skipping 39 matching lines @@
     : chromeClient(nullptr),
       contextMenuClient(nullptr),
       editorClient(nullptr),
       spellCheckerClient(nullptr) {}
 
 Page::PageClients::~PageClients() {}
 
 template class CORE_TEMPLATE_EXPORT Supplement<Page>;
 
 }  // namespace blink