Cleanup XFA-Specific memory allocators.

xfa/fgas/crt/fgas_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 XFA_FGAS_CRT_FGAS_MEMORY_H_
 #define XFA_FGAS_CRT_FGAS_MEMORY_H_
 
 #include "core/fxcrt/include/fx_memory.h"
 #include "core/fxcrt/include/fx_system.h"
 
-class IFX_MEMAllocator;
-class CFX_Target;
 enum FX_ALLOCTYPE {
-  FX_ALLOCTYPE_Default = 0,
   FX_ALLOCTYPE_Static,
   FX_ALLOCTYPE_Fixed,
-  FX_ALLOCTYPE_Dynamic,
 };
 
-class IFX_MEMAllocator {
+class IFX_MemoryAllocator {
  public:
-  virtual ~IFX_MEMAllocator() {}
+  virtual ~IFX_MemoryAllocator() {}
   virtual void Release() = 0;
+
   virtual void* Alloc(size_t size) = 0;
   virtual void Free(void* pBlock) = 0;
-  virtual size_t GetBlockSize() const = 0;
-  virtual size_t GetDefChunkSize() const = 0;
-  virtual size_t SetDefChunkSize(size_t size) = 0;
-  virtual size_t GetCurrentDataSize() const = 0;
+
+  static IFX_MemoryAllocator* Create(FX_ALLOCTYPE eType,
+                                     size_t chunkSize,
+                                     size_t blockSize);
 };
 
-IFX_MEMAllocator* FX_CreateAllocator(FX_ALLOCTYPE eType,
-                                     size_t chunkSize,
-                                     size_t blockSize);
 class CFX_Target {
  public:
   virtual ~CFX_Target() {}
   void* operator new(size_t size) { return FX_Alloc(uint8_t, size); }
   void operator delete(void* p) { FX_Free(p); }
-  void* operator new(size_t size, IFX_MEMAllocator* pAllocator) {
+  void* operator new(size_t size, IFX_MemoryAllocator* pAllocator) {
     return pAllocator->Alloc(size);
   }
-  void operator delete(void* p, IFX_MEMAllocator* pAllocator) {
+  void operator delete(void* p, IFX_MemoryAllocator* pAllocator) {
     pAllocator->Free(p);
   }
   void* operator new(size_t size, void* place) { return place; }
   void operator delete(void* p, void* place) {}
 };
 
 #define FXTARGET_NewWith(__allocator__) new (__allocator__)
 #define FXTARGET_DeleteWith(__class__, __allocator__, pointer) \
   {                                                            \
     (pointer)->~__class__();                                   \
     (pointer)->operator delete((pointer), (__allocator__));    \
   }
 
 #endif  // XFA_FGAS_CRT_FGAS_MEMORY_H_