Merge the CFWL_*Imp classes into the IFWL_* classes.

xfa/fwl/basewidget/ifwl_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_BASEWIDGET_IFWL_TOOLTIP_H_
-#define XFA_FWL_BASEWIDGET_IFWL_TOOLTIP_H_
-
-#include "xfa/fwl/core/ifwl_form.h"
-
-class CFWL_WidgetImpProperties;
-class IFWL_ToolTip;
-
-#define FWL_CLASS_ToolTip L"FWL_TOOLTIP"
-#define FWL_STYLEEXT_TTP_Rectangle (0L << 3)
-#define FWL_STYLEEXT_TTP_RoundCorner (1L << 3)
-#define FWL_STYLEEXT_TTP_Balloon (1L << 4)
-#define FWL_STYLEEXT_TTP_Multiline (1L << 5)
-#define FWL_STYLEEXT_TTP_NoAnchor (1L << 6)
-
-class IFWL_ToolTipDP : public IFWL_DataProvider {
- public:
-  // IFWL_DataProvider
-  FWL_Error GetCaption(IFWL_Widget* pWidget,
-                       CFX_WideString& wsCaption) override = 0;
-
-  virtual int32_t GetInitialDelay(IFWL_Widget* pWidget) = 0;
-  virtual int32_t GetAutoPopDelay(IFWL_Widget* pWidget) = 0;
-  virtual CFX_DIBitmap* GetToolTipIcon(IFWL_Widget* pWidget) = 0;
-  virtual CFX_SizeF GetToolTipIconSize(IFWL_Widget* pWidget) = 0;
-};
-
-class IFWL_ToolTip : public IFWL_Form {
- public:
-  static IFWL_ToolTip* Create(const CFWL_WidgetImpProperties& properties,
-                              IFWL_Widget* pOuter);
-
-  void SetAnchor(const CFX_RectF& rtAnchor);
-  void Show();
-  void Hide();
-
- protected:
-  IFWL_ToolTip();
-};
-
-#endif  // XFA_FWL_BASEWIDGET_IFWL_TOOLTIP_H_