Revert "Kill CFX_GrowOnlyPool."

core/include/fxcrt/fx_memory.h

 // 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
 
 #ifndef _FX_MEMORY_H_
 #define _FX_MEMORY_H_
 #ifndef _FX_SYSTEM_H_
 #include "fx_system.h"
@@ skipping 47 matching lines @@
     void                        operator delete[] (void* p)
     {
         free(p);
     }
     void*                       operator new (size_t, void* buf)
     {
         return buf;
     }
     void                        operator delete (void*, void*)                                                  {}
 };
+#endif
+#ifdef __cplusplus
 #if defined(_DEBUG)
 #define FX_NEW new(__FILE__, __LINE__)
 #else
+
 #define FX_NEW new
 #endif
 #define FX_NEW_VECTOR(Pointer, Class, Count) \
     { \
         Pointer = FX_Alloc(Class, Count); \
         if (Pointer) { \
             for (int i = 0; i < (Count); i ++) new (Pointer + i) Class; \
         } \
     }
 #define FX_DELETE_VECTOR(Pointer, Class, Count) \
     { \
         for (int i = 0; i < (Count); i ++) Pointer[i].~Class(); \
         FX_Free(Pointer); \
     }
 class CFX_DestructObject : public CFX_Object
 {
 public:
 
     virtual ~CFX_DestructObject() {}
 };
-#endif  // __cplusplus
-#endif  // _FX_MEMORY_H_
+class CFX_GrowOnlyPool : public CFX_Object
+{
+public:
+
+    CFX_GrowOnlyPool(size_t trunk_size = 16384);
+
+    ~CFX_GrowOnlyPool();
+
+    void        SetTrunkSize(size_t trunk_size)
+    {
+        m_TrunkSize = trunk_size;
+    }
+
+    void*       AllocDebug(size_t size, FX_LPCSTR file, int line)
+    {
+        return Alloc(size);
+    }
+
+    void*       Alloc(size_t size);
+
+    void*       ReallocDebug(void* p, size_t new_size, FX_LPCSTR file, int line)
+    {
+        return NULL;
+    }
+
+    void*       Realloc(void* p, size_t new_size)
+    {
+        return NULL;
+    }
+
+    void        Free(void*) {}
+
+    void        FreeAll();
+private:
+
+    size_t      m_TrunkSize;
+
+    void*       m_pFirstTrunk;
+};
+#endif
+#endif