Create a subset of skia support for paths only

core/fpdfapi/render/fpdf_render_image.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/fpdfapi/render/render_int.h"
 
 #include <memory>
 #include <utility>
@@ skipping 964 matching lines @@
 
   CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(),
                  pGroup);
   form.ParseContent(nullptr, nullptr, nullptr);
 
   CFX_FxgeDevice bitmap_device;
   bool bLuminosity = pSMaskDict->GetStringFor("S") != "Alpha";
   int width = pClipRect->right - pClipRect->left;
   int height = pClipRect->bottom - pClipRect->top;
   FXDIB_Format format;
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || defined _SKIA_SUPPORT_
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || defined _SKIA_SUPPORT_ || \
+    defined _SKIA_SUPPORT_PATHS_
   format = bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask;
 #else
   format = bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask;
 #endif
   if (!bitmap_device.Create(width, height, format, nullptr))
     return nullptr;
 
   CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap();
   int color_space_family = 0;
   if (bLuminosity) {
@@ skipping 84 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.release();
 }