Remove unused code.

xfa/fwl/lightwidget/cfwl_tooltip.h

-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#ifndef XFA_FWL_LIGHTWIDGET_CFWL_TOOLTIP_H_
-#define XFA_FWL_LIGHTWIDGET_CFWL_TOOLTIP_H_
-
-#include "xfa/fwl/basewidget/ifwl_tooltip.h"
-#include "xfa/fwl/lightwidget/cfwl_widget.h"
-
-class CFWL_ToolTip : public CFWL_Widget {
- public:
-  static CFWL_ToolTip* Create();
-
-  CFWL_ToolTip();
-  virtual ~CFWL_ToolTip();
-
-  FWL_Error Initialize(const CFWL_WidgetProperties* pProperties = nullptr);
-
-  void GetCaption(CFX_WideString& wsCaption);
-  void SetCaption(const CFX_WideStringC& wsCaption);
-
-  int32_t GetInitialDelay();
-  void SetInitialDelay(int32_t nDelayTime);
-
-  int32_t GetAutoPopDelay();
-  void SetAutoPopDelay(int32_t nDelayTime);
-
-  CFX_DIBitmap* GetToolTipIcon();
-  void SetToolTipIcon(CFX_DIBitmap* pBitmap);
-  CFX_SizeF GetToolTipIconSize();
-  void SetToolTipIconSize(CFX_SizeF fSize);
-
-  void SetAnchor(const CFX_RectF& rtAnchor);
-  void Show();
-  void Hide();
-
- protected:
-  class CFWL_ToolTipDP : public IFWL_ToolTipDP {
-   public:
-    CFWL_ToolTipDP();
-    FWL_Error GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption);
-    int32_t GetInitialDelay(IFWL_Widget* pWidget);
-    int32_t GetAutoPopDelay(IFWL_Widget* pWidget);
-    CFX_DIBitmap* GetToolTipIcon(IFWL_Widget* pWidget);
-    CFX_SizeF GetToolTipIconSize(IFWL_Widget* pWidget);
-    CFX_RectF GetAnchor();
-    CFX_WideString m_wsCaption;
-    int32_t m_nInitDelayTime;
-    int32_t m_nAutoPopDelayTime;
-    CFX_DIBitmap* m_pBitmap;
-    CFX_SizeF m_fIconSize;
-    CFX_RectF m_fAnchor;
-  };
-  CFWL_ToolTipDP m_tooltipData;
-};
-
-#endif  // XFA_FWL_LIGHTWIDGET_CFWL_TOOLTIP_H_