Remove unused dwFlags parameter in CPDFSDK_AnnotHandlerMgr::OnDraw and its calls.

fpdfsdk/include/cpdfsdk_widgethandler.h

 // Copyright 2016 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_CPDFSDK_WIDGETHANDLER_H_
 #define FPDFSDK_INCLUDE_CPDFSDK_WIDGETHANDLER_H_
 
 #include "core/fxcrt/include/fx_basic.h"
@@ skipping 26 matching lines @@
   void ReleaseAnnot(CPDFSDK_Annot* pAnnot) override;
   void DeleteAnnot(CPDFSDK_Annot* pAnnot) override;
   CFX_FloatRect GetViewBBox(CPDFSDK_PageView* pPageView,
                             CPDFSDK_Annot* pAnnot) override;
   FX_BOOL HitTest(CPDFSDK_PageView* pPageView,
                   CPDFSDK_Annot* pAnnot,
                   const CFX_FloatPoint& point) override;
   void OnDraw(CPDFSDK_PageView* pPageView,
               CPDFSDK_Annot* pAnnot,
               CFX_RenderDevice* pDevice,
-              CFX_Matrix* pUser2Device,
-              uint32_t dwFlags) override;
+              CFX_Matrix* pUser2Device) override;
   void OnDrawSleep(CPDFSDK_PageView* pPageView,
                    CPDFSDK_Annot* pAnnot,
                    CFX_RenderDevice* pDevice,
                    CFX_Matrix* pUser2Device,
                    const CFX_FloatRect& rcWindow,
                    uint32_t dwFlags) override;
   void OnCreate(CPDFSDK_Annot* pAnnot) override;
   void OnLoad(CPDFSDK_Annot* pAnnot) override;
   void OnDelete(CPDFSDK_Annot* pAnnot) override;
   void OnRelease(CPDFSDK_Annot* pAnnot) override;
@@ skipping 52 matching lines @@
 
   void SetFormFiller(CFFL_IFormFiller* pFiller) { m_pFormFiller = pFiller; }
   CFFL_IFormFiller* GetFormFiller() { return m_pFormFiller; }
 
  private:
   CPDFDoc_Environment* m_pApp;
   CFFL_IFormFiller* m_pFormFiller;
 };
 
 #endif  // FPDFSDK_INCLUDE_CPDFSDK_WIDGETHANDLER_H_