Remove MakeSeekableReadStream

This Cl removes the MakeSeekableReadStream call and, at the one place
it's used, creates an IFX_MemoryStream which is a seekable read stream.

Change-Id: I6b0b23636eff47f8caca5432313ba99703e21e4d
Reviewed-on: https://pdfium-review.googlesource.com/4037
Reviewed-by: Nicolás Peña <npm@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/xfa/fxfa/cxfa_fileread.h b/xfa/fxfa/cxfa_fileread.h
new file mode 100644
index 0000000000..0c3348b8d5
--- /dev/null
+++ b/xfa/fxfa/cxfa_fileread.h
@@ -0,0 +1,31 @@
+// Copyright 2017 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_FXFA_CXFA_FILEREAD_H_
+#define XFA_FXFA_CXFA_FILEREAD_H_
+
+#include <vector>
+
+#include "core/fxcrt/cfx_retain_ptr.h"
+#include "core/fxcrt/fx_stream.h"
+
+class CPDF_Stream;
+class CPDF_StreamAcc;
+
+class CXFA_FileRead : public IFX_SeekableReadStream {
+ public:
+  explicit CXFA_FileRead(const std::vector<CPDF_Stream*>& streams);
+  ~CXFA_FileRead() override;
+
+  // IFX_SeekableReadStream
+  FX_FILESIZE GetSize() override;
+  bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
+
+ private:
+  std::vector<CFX_RetainPtr<CPDF_StreamAcc>> m_Data;
+};
+
+#endif  // XFA_FXFA_CXFA_FILEREAD_H_