re-enable skia caching

core/fpdfapi/render/cpdf_renderstatus.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 "core/fpdfapi/render/cpdf_renderstatus.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 880 matching lines @@
   CPDF_RenderOptions options;
   if (!pPattern->colored())
     options.m_ColorMode = RENDER_COLOR_ALPHA;
 
   flags |= RENDER_FORCE_HALFTONE;
   options.m_Flags = flags;
   CPDF_RenderContext context(pDoc, pCache);
   context.AppendLayer(pPattern->form(), &mtPattern2Bitmap);
   context.Render(&bitmap_device, &options, nullptr);
 #if defined _SKIA_SUPPORT_PATHS_
+  bitmap_device.Flush();
   pBitmap->UnPreMultiply();
 #endif
   return pBitmap;
 }
 
 bool IsAvailableMatrix(const CFX_Matrix& matrix) {
   if (matrix.a == 0 || matrix.d == 0)
     return matrix.b != 0 && matrix.c != 0;
 
   if (matrix.b == 0 || matrix.c == 0)
@@ skipping 635 matching lines @@
           textobj->m_TextState.GetFontSize(), &text_matrix, &new_matrix,
           textobj->m_GraphState.GetObject(), (FX_ARGB)-1, 0, nullptr, 0);
     }
   }
   CPDF_RenderStatus bitmap_render;
   bitmap_render.Initialize(m_pContext, &bitmap_device, nullptr, m_pStopObj,
                            nullptr, nullptr, &m_Options, 0, m_bDropObjects,
                            pFormResource, true);
   bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix);
 #if defined _SKIA_SUPPORT_PATHS_
+  bitmap_device.Flush();
   bitmap->UnPreMultiply();
 #endif
   m_bStopped = bitmap_render.m_bStopped;
   if (pSMaskDict) {
     CFX_Matrix smask_matrix = *pPageObj->m_GeneralState.GetSMaskMatrix();
     smask_matrix.Concat(*pObj2Device);
     std::unique_ptr<CFX_DIBSource> pSMaskSource =
         LoadSMask(pSMaskDict, &rect, &smask_matrix);
     if (pSMaskSource)
       bitmap->MultiplyAlpha(pSMaskSource.get());
@@ skipping 1059 matching lines @@
   } else if (pFunc) {
     int size = dest_pitch * height;
     for (int i = 0; i < size; i++) {
       dest_buf[i] = transfers[src_buf[i]];
     }
   } else {
     FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height);
   }
   return pMask;
 }