Review and cleanup lint warnings.

fpdfsdk/include/pdfwindow/PWL_ListBox.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 FPDFSDK_INCLUDE_PDFWINDOW_PWL_LISTBOX_H_
 #define FPDFSDK_INCLUDE_PDFWINDOW_PWL_LISTBOX_H_
 
+#include <string>

[Tom Sepez, 2016/03/08 19:27:05]

*

[dsinclair, 2016/03/08 21:08:02]

Done.

+
 #include "fpdfsdk/include/fxedit/fx_edit.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Wnd.h"
 
 class CPWL_List_Notify;
 class CPWL_ListBox;
 class IPWL_Filler_Notify;
 
 class CPWL_List_Notify : public IFX_List_Notify {
  public:
   CPWL_List_Notify(CPWL_ListBox* pList);
@@ skipping 93 matching lines @@
   IPWL_Filler_Notify* m_pFillerNotify;
 
  public:
   void AttachFFLData(void* pData) { m_pFormFiller = pData; }
 
  private:
   void* m_pFormFiller;
 };
 
 #endif  // FPDFSDK_INCLUDE_PDFWINDOW_PWL_LISTBOX_H_