Remove unused CFX_GrowOnlyPool.

core/src/fxcrt/fx_basic_memmgr.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 <stdlib.h>  // For abort().
 
 #include "core/include/fxcrt/fx_memory.h"
 
 void* FXMEM_DefaultAlloc(size_t byte_size, int flags) {
   return (void*)malloc(byte_size);
 }
 void* FXMEM_DefaultRealloc(void* pointer, size_t new_size, int flags) {
   return realloc(pointer, new_size);
 }
 void FXMEM_DefaultFree(void* pointer, int flags) {
   free(pointer);
 }
 
 NEVER_INLINE void FX_OutOfMemoryTerminate() {
   // Termimate cleanly if we can, else crash at a specific address (0xbd).
   abort();
   reinterpret_cast<void (*)()>(0xbd)();
 }
-
-CFX_GrowOnlyPool::CFX_GrowOnlyPool(size_t trunk_size) {
-  m_TrunkSize = trunk_size;
-  m_pFirstTrunk = NULL;
-}
-CFX_GrowOnlyPool::~CFX_GrowOnlyPool() {
-  FreeAll();
-}
-struct _FX_GrowOnlyTrunk {
-  size_t m_Size;
-  size_t m_Allocated;
-  _FX_GrowOnlyTrunk* m_pNext;
-};
-void CFX_GrowOnlyPool::FreeAll() {
-  _FX_GrowOnlyTrunk* pTrunk = (_FX_GrowOnlyTrunk*)m_pFirstTrunk;
-  while (pTrunk) {
-    _FX_GrowOnlyTrunk* pNext = pTrunk->m_pNext;
-    FX_Free(pTrunk);
-    pTrunk = pNext;
-  }
-  m_pFirstTrunk = NULL;
-}
-void* CFX_GrowOnlyPool::Alloc(size_t size) {
-  size = (size + 3) / 4 * 4;
-  _FX_GrowOnlyTrunk* pTrunk = (_FX_GrowOnlyTrunk*)m_pFirstTrunk;
-  while (pTrunk) {
-    if (pTrunk->m_Size - pTrunk->m_Allocated >= size) {
-      void* p = (uint8_t*)(pTrunk + 1) + pTrunk->m_Allocated;
-      pTrunk->m_Allocated += size;
-      return p;
-    }
-    pTrunk = pTrunk->m_pNext;
-  }
-  size_t alloc_size = size > m_TrunkSize ? size : m_TrunkSize;
-  pTrunk = (_FX_GrowOnlyTrunk*)FX_Alloc(uint8_t,
-                                        sizeof(_FX_GrowOnlyTrunk) + alloc_size);
-  pTrunk->m_Size = alloc_size;
-  pTrunk->m_Allocated = size;
-  pTrunk->m_pNext = (_FX_GrowOnlyTrunk*)m_pFirstTrunk;
-  m_pFirstTrunk = pTrunk;
-  return pTrunk + 1;
-}