Convert FrameView timer to UnspecedTimer frame-specific timer.

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 165 matching lines @@
           this,
           &FrameView::updateWidgetsTimerFired),
       m_isTransparent(false),
       m_baseBackgroundColor(Color::white),
       m_mediaType(MediaTypeNames::screen),
       m_safeToPropagateScrollToParent(true),
       m_scrollCorner(nullptr),
       m_stickyPositionObjectCount(0),
       m_inputEventsScaleFactorForEmulation(1),
       m_layoutSizeFixedToFrameSize(true),
-      m_didScrollTimer(this, &FrameView::didScrollTimerFired),
+      m_didScrollTimer(TaskRunnerHelper::get(TaskType::UnspecedTimer, &frame),
+                       this,
+                       &FrameView::didScrollTimerFired),
       m_needsUpdateWidgetGeometries(false),
       m_horizontalScrollbarMode(ScrollbarAuto),
       m_verticalScrollbarMode(ScrollbarAuto),
       m_horizontalScrollbarLock(false),
       m_verticalScrollbarLock(false),
       m_scrollbarsSuppressed(false),
       m_inUpdateScrollbars(false),
       m_frameTimingRequestsDirty(true),
       m_hiddenForThrottling(false),
       m_subtreeThrottled(false),
@@ skipping 4988 matching lines @@
 void FrameView::setAnimationHost(
     std::unique_ptr<CompositorAnimationHost> host) {
   m_animationHost = std::move(host);
 }
 
 LayoutUnit FrameView::caretWidth() const {
   return LayoutUnit(getHostWindow()->windowToViewportScalar(1));
 }
 
 }  // namespace blink