Remove unused m_nTabOrder in CPDFSDK_Annot.

fpdfsdk/cpdfsdk_annot.cpp

 // 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
 
 #include "fpdfsdk/include/cpdfsdk_annot.h"
 
 #include <algorithm>
 
 #include "fpdfsdk/include/fsdk_mgr.h"
 
 #ifdef PDF_ENABLE_XFA
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
 #endif  // PDF_ENABLE_XFA
 
 namespace {
 
 const float kMinWidth = 1.0f;
 const float kMinHeight = 1.0f;
 
 }  // namespace
 
 CPDFSDK_Annot::CPDFSDK_Annot(CPDFSDK_PageView* pPageView)
-    : m_pPageView(pPageView), m_bSelected(FALSE), m_nTabOrder(-1) {}
+    : m_pPageView(pPageView), m_bSelected(FALSE) {}
 
 CPDFSDK_Annot::~CPDFSDK_Annot() {}
 
 #ifdef PDF_ENABLE_XFA
 
 FX_BOOL CPDFSDK_Annot::IsXFAField() {
   return FALSE;
 }
 
 CXFA_FFWidget* CPDFSDK_Annot::GetXFAWidget() const {
@@ skipping 41 matching lines @@
                                  CPDF_RenderOptions* pOptions) {}
 
 FX_BOOL CPDFSDK_Annot::IsSelected() {
   return m_bSelected;
 }
 
 void CPDFSDK_Annot::SetSelected(FX_BOOL bSelected) {
   m_bSelected = bSelected;
 }
 
-int CPDFSDK_Annot::GetTabOrder() {
-  return m_nTabOrder;
-}
-
-void CPDFSDK_Annot::SetTabOrder(int iTabOrder) {
-  m_nTabOrder = iTabOrder;
-}
-
 UnderlyingPageType* CPDFSDK_Annot::GetUnderlyingPage() {
 #ifdef PDF_ENABLE_XFA
   return GetPDFXFAPage();
 #else   // PDF_ENABLE_XFA
   return GetPDFPage();
 #endif  // PDF_ENABLE_XFA
 }
 
 CPDF_Page* CPDFSDK_Annot::GetPDFPage() {
   return m_pPageView ? m_pPageView->GetPDFPage() : nullptr;
 }