Continue IFWL widget cleanup.

xfa/fwl/core/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_CORE_IFWL_TOOLTIP_H_
 #define XFA_FWL_CORE_IFWL_TOOLTIP_H_
 
 #include "xfa/fwl/core/ifwl_form.h"
 #include "xfa/fwl/core/ifwl_timer.h"
 
 class CFWL_WidgetProperties;
 class IFWL_Widget;
 class CFWL_ToolTipImpDelegate;
 
 #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;
+  void 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:
   IFWL_ToolTip(const IFWL_App* app,
@@ skipping 36 matching lines @@
   uint32_t m_dwTTOStyles;
   int32_t m_iTTOAlign;
   CFX_RectF m_rtAnchor;
   IFWL_TimerInfo* m_pTimerInfoShow;
   IFWL_TimerInfo* m_pTimerInfoHide;
   IFWL_ToolTip::Timer m_TimerShow;
   IFWL_ToolTip::Timer m_TimerHide;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_TOOLTIP_H_