Change _PDF_RenderItem to CPDF_RenderContext::Layer.

core/src/fpdfdoc/doc_annot.cpp

 // 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
 
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 #include "core/include/fpdfdoc/fpdf_doc.h"
 
 CPDF_AnnotList::CPDF_AnnotList(CPDF_Page* pPage)
@@ skipping 209 matching lines @@
                                    const CFX_Matrix* pUser2Device,
                                    AppearanceMode mode,
                                    const CPDF_RenderOptions* pOptions) {
   CFX_Matrix matrix;
   CPDF_Form* pForm =
       FPDFDOC_Annot_GetMatrix(pPage, this, mode, pUser2Device, matrix);
   if (!pForm) {
     return FALSE;
   }
   CPDF_RenderContext context(pPage);
-  context.DrawObjectList(pDevice, pForm, &matrix, pOptions);
+  context.AppendLayer(pForm, &matrix);
+  context.Render(pDevice, pOptions, nullptr);
   return TRUE;
 }
 FX_BOOL CPDF_Annot::DrawInContext(const CPDF_Page* pPage,
                                   CPDF_RenderContext* pContext,
                                   const CFX_Matrix* pUser2Device,
                                   AppearanceMode mode) {
   CFX_Matrix matrix;
   CPDF_Form* pForm =
       FPDFDOC_Annot_GetMatrix(pPage, this, mode, pUser2Device, matrix);
   if (!pForm) {
     return FALSE;
   }
-  pContext->AppendObjectList(pForm, &matrix);
+  pContext->AppendLayer(pForm, &matrix);
   return TRUE;
 }
 void CPDF_Annot::DrawBorder(CFX_RenderDevice* pDevice,
                             const CFX_Matrix* pUser2Device,
                             const CPDF_RenderOptions* pOptions) {
   if (GetSubType() == "Popup") {
     return;
   }
   FX_DWORD annot_flags = GetFlags();
   if (annot_flags & ANNOTFLAG_HIDDEN) {
@@ skipping 82 matching lines @@
   CPDF_PathData path;
   width /= 2;
   path.AppendRect(rect.left + width, rect.bottom + width, rect.right - width,
                   rect.top - width);
   int fill_type = 0;
   if (pOptions && (pOptions->m_Flags & RENDER_NOPATHSMOOTH)) {
     fill_type |= FXFILL_NOPATHSMOOTH;
   }
   pDevice->DrawPath(&path, pUser2Device, &graph_state, argb, argb, fill_type);
 }