Run smooth scroll animations on the compositor when possible

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

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 247 matching lines @@
     // Propagate the marginwidth/height and scrolling modes to the view.
     if (m_frame->owner() && m_frame->owner()->scrollingMode() == ScrollbarAlwaysOff)
         setCanHaveScrollbars(false);
 }
 
 void FrameView::dispose()
 {
     RELEASE_ASSERT(!isInPerformLayout());
 
     if (ScrollAnimatorBase* scrollAnimator = existingScrollAnimator())
-        scrollAnimator->cancelAnimations();
+        scrollAnimator->cancelAnimation();
     cancelProgrammaticScrollAnimation();
 
     detachScrollbars();
 
     // When the view is no longer associated with a frame, it needs to be removed from the ax object cache
     // right now, otherwise it won't be able to reach the topDocument()'s axObject cache later.
     removeFromAXObjectCache();
 
     if (ScrollingCoordinator* scrollingCoordinator = this->scrollingCoordinator())
         scrollingCoordinator->willDestroyScrollableArea(this);
@@ skipping 3727 matching lines @@
     return m_hiddenForThrottling && m_crossOriginForThrottling;
 }
 
 LayoutBox& FrameView::boxForScrollControlPaintInvalidation() const
 {
     ASSERT(layoutView());
     return *layoutView();
 }
 
 } // namespace blink