Move ByteStringPool from document to indirect object holder.

core/fpdfapi/parser/cpdf_document.h

Index: core/fpdfapi/parser/cpdf_document.h
diff --git a/core/fpdfapi/parser/cpdf_document.h b/core/fpdfapi/parser/cpdf_document.h
index 73c866668644e8359528cc3854023e3bd5188640..1fd13a1c8e43c0fa5f175bfa322dbed90c1025ee 100644
--- a/core/fpdfapi/parser/cpdf_document.h
+++ b/core/fpdfapi/parser/cpdf_document.h
@@ -13,8 +13,6 @@
 #include "core/fpdfapi/parser/cpdf_indirect_object_holder.h"
 #include "core/fpdfapi/parser/cpdf_object.h"
 #include "core/fpdfdoc/cpdf_linklist.h"
-#include "core/fxcrt/cfx_string_pool_template.h"
-#include "core/fxcrt/cfx_weak_ptr.h"
 #include "core/fxcrt/fx_basic.h"
 
 class CFX_Font;
@@ -50,13 +48,9 @@ class CPDF_Document : public CPDF_IndirectObjectHolder {
   CPDF_Parser* GetParser() const { return m_pParser.get(); }
   CPDF_Dictionary* GetRoot() const { return m_pRootDict; }
   CPDF_Dictionary* GetInfo() const { return m_pInfoDict; }
-  CFX_WeakPtr<CFX_ByteStringPool> GetByteStringPool() const {
-    return m_pByteStringPool;
-  }
 
   void DeletePage(int iPage);
   int GetPageCount() const;
-
   bool IsPageLoaded(int iPage) const;
   CPDF_Dictionary* GetPage(int iPage);
   int GetPageIndex(uint32_t objnum);
@@ -150,7 +144,6 @@ class CPDF_Document : public CPDF_IndirectObjectHolder {
   std::unique_ptr<JBig2_DocumentContext> m_pCodecContext;
   std::unique_ptr<CPDF_LinkList> m_pLinksContext;
   CFX_ArrayTemplate<uint32_t> m_PageList;
-  CFX_WeakPtr<CFX_ByteStringPool> m_pByteStringPool;
 };
 
 #endif  // CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_