Remove the GetCaption dataprovider method

xfa/fwl/core/cfwl_notedriver.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_CFWL_NOTEDRIVER_H_
 #define XFA_FWL_CORE_CFWL_NOTEDRIVER_H_
 
 #include <deque>
 #include <memory>
 #include <unordered_map>
 
 #include "xfa/fwl/core/cfwl_event.h"
-#include "xfa/fwl/core/ifwl_tooltip.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 #include "xfa/fxgraphics/cfx_graphics.h"
 
 class CFWL_EventTarget;
 class CFWL_NoteLoop;
 class CFWL_TargetImp;
-class IFWL_ToolTip;
 class IFWL_Widget;
 
 class CFWL_NoteDriver {
  public:
   CFWL_NoteDriver();
   ~CFWL_NoteDriver();
 
   void SendEvent(CFWL_Event* pNote);
 
   void RegisterEventTarget(IFWL_Widget* pListener, IFWL_Widget* pEventSource);
@@ skipping 38 matching lines @@
   std::deque<std::unique_ptr<CFWL_Message>> m_noteQueue;
   CFX_ArrayTemplate<CFWL_NoteLoop*> m_noteLoopQueue;
   std::unordered_map<uint32_t, CFWL_EventTarget*> m_eventTargets;
   IFWL_Widget* m_pHover;
   IFWL_Widget* m_pFocus;
   IFWL_Widget* m_pGrab;
   std::unique_ptr<CFWL_NoteLoop> m_pNoteLoop;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_NOTEDRIVER_H_