Move core/src/ up to core/.

core/src/fxcrt/fxcrt_stream.cpp

-// Copyright 2016 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 "core/include/fxcrt/fx_stream.h"
-
-FX_BOOL IFX_FileWrite::WriteBlock(const void* pData, size_t size) {
-  return WriteBlock(pData, GetSize(), size);
-}
-
-FX_BOOL IFX_FileRead::IsEOF() {
-  return FALSE;
-}
-
-FX_FILESIZE IFX_FileRead::GetPosition() {
-  return 0;
-}
-
-size_t IFX_FileRead::ReadBlock(void* buffer, size_t size) {
-  return 0;
-}
-
-FX_BOOL IFX_FileStream::WriteBlock(const void* buffer, size_t size) {
-  return WriteBlock(buffer, GetSize(), size);
-}