Simplify PDFium by removing code that's not used in the open source repo.

fpdfsdk/src/fpdfoom.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 "../include/fsdk_define.h"
-#include "../include/fpdfoom.h"
-
-void OOM_Handler(void* param)
-{
-        if (!param) return;
-        ((OOM_INFO*)param)->FSDK_OOM_Handler((OOM_INFO*)param);
-}
-
-
-DLLEXPORT FX_BOOL STDCALL FSDK_SetOOMHandler(OOM_INFO* oomInfo)
-{
-#ifndef _FXSDK_OPENSOURCE_
-        if (!oomInfo || oomInfo->version!=1)
-                return FALSE;
-        FXMEM_SetOOMHandler(FXMEM_GetDefaultMgr(),OOM_Handler,oomInfo);

[jam, 2014/12/12 19:36:03]

this method isn't defined anymore.

Tom: this was added for security reasons (see the caller in chromium code which
exits the process on OOM). I'm guessing we don't need this anymore now that we
don't use a custom memory allocator?

-        return TRUE;
-#else
-        return TRUE;
-#endif
-}