re-enable skia caching

core/fpdfapi/cpdf_pagerendercontext.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 CORE_FPDFAPI_CPDF_PAGERENDERCONTEXT_H_
 #define CORE_FPDFAPI_CPDF_PAGERENDERCONTEXT_H_
 
 #include <memory>
 
 class CFX_RenderDevice;
 class CPDF_AnnotList;
 class CPDF_ProgressiveRenderer;
 class CPDF_RenderContext;
 class CPDF_RenderOptions;
 
 // Everything about rendering is put here: for OOM recovery
 class CPDF_PageRenderContext {
  public:
   CPDF_PageRenderContext();
   ~CPDF_PageRenderContext();
 
+  std::unique_ptr<CPDF_AnnotList> m_pAnnots;
   std::unique_ptr<CFX_RenderDevice> m_pDevice;
   std::unique_ptr<CPDF_RenderContext> m_pContext;
   std::unique_ptr<CPDF_ProgressiveRenderer> m_pRenderer;
-  std::unique_ptr<CPDF_AnnotList> m_pAnnots;
   std::unique_ptr<CPDF_RenderOptions> m_pOptions;
 };
 
 #endif  // CORE_FPDFAPI_CPDF_PAGERENDERCONTEXT_H_