Extracted MetafilePlayer interface from printing::MetafilePlayer.

printing/metafile.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "printing/metafile.h"
+
+#include <vector>
+
+#include "base/files/file.h"
+#include "base/numerics/safe_conversions.h"
+
+namespace printing {
+
+bool Metafile::GetDataAsVector(std::vector<char>* buffer) const {
+  buffer->resize(GetDataSize());
+  if (buffer->empty())
+    return false;
+  return GetData(&buffer->front(), base::checked_cast<uint32>(buffer->size()));
+}
+
+bool Metafile::SaveTo(base::File* file) const {
+  if (!file->IsValid())
+    return false;
+
+  std::vector<char> buffer;
+  if (!GetDataAsVector(&buffer))
+    return false;
+
+  int size = base::checked_cast<int>(buffer.size());
+  if (file->WriteAtCurrentPos(&buffer[0], size) != size) {
+    DLOG(ERROR) << "Failed to save file.";
+    return false;
+  }
+  return true;
+}
+
+}  // namespace printing