Move core/editing timer to frame-specific task runners.

third_party/WebKit/Source/core/editing/FrameCaret.h

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
 #include "platform/geometry/IntRect.h"
 
 namespace blink {
 
 class SelectionEditor;
 
 enum class CaretVisibility { Visible, Hidden };
 
 class CORE_EXPORT FrameCaret final : public CaretBase {
  public:
-  FrameCaret(LocalFrame*, const SelectionEditor&);
+  FrameCaret(LocalFrame&, const SelectionEditor&);
   ~FrameCaret() override;
 
   bool isActive() const { return caretPosition().isNotNull(); }
 
   void updateAppearance();
 
   // Used to suspend caret blinking while the mouse is down.
   void setCaretBlinkingSuspended(bool suspended) {
     m_isCaretBlinkingSuspended = suspended;
   }
@@ skipping 36 matching lines @@
 
   const Member<const SelectionEditor> m_selectionEditor;
   const Member<LocalFrame> m_frame;
   // The last node which painted the caret. Retained for clearing the old
   // caret when it moves.
   Member<Node> m_previousCaretNode;
   Member<Node> m_previousCaretAnchorNode;
   LayoutRect m_previousCaretRect;
   CaretVisibility m_caretVisibility;
   CaretVisibility m_previousCaretVisibility;
-  Timer<FrameCaret> m_caretBlinkTimer;
+  // TODO(https://crbug.com/668758): Consider using BeginFrame update for this.
+  TaskRunnerTimer<FrameCaret> m_caretBlinkTimer;
   bool m_caretRectDirty : 1;
   bool m_shouldPaintCaret : 1;
   bool m_isCaretBlinkingSuspended : 1;
   bool m_shouldShowBlockCursor : 1;
 };
 
 }  // namespace blink
 
 #endif  // FrameCaret_h