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diff --git a/chromium/third_party/webrtc/modules/audio_coding/neteq/tools/input_audio_file.h b/chromium/third_party/webrtc/modules/audio_coding/neteq/tools/input_audio_file.h
new file mode 100644
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+++ b/chromium/third_party/webrtc/modules/audio_coding/neteq/tools/input_audio_file.h
@@ -0,0 +1,51 @@
+/*
+ *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_
+#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_
+
+#include <stdio.h>
+
+#include <string>
+
+#include "webrtc/base/constructormagic.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+namespace test {
+
+// Class for handling a looping input audio file.
+class InputAudioFile {
+ public:
+  explicit InputAudioFile(const std::string file_name);
+
+  virtual ~InputAudioFile();
+
+  // Reads |samples| elements from source file to |destination|. Returns true
+  // if the read was successful, otherwise false. If the file end is reached,
+  // the file is rewound and reading continues from the beginning.
+  // The output |destination| must have the capacity to hold |samples| elements.
+  bool Read(size_t samples, int16_t* destination);
+
+  // Creates a multi-channel signal from a mono signal. Each sample is repeated
+  // |channels| times to create an interleaved multi-channel signal where all
+  // channels are identical. The output |destination| must have the capacity to
+  // hold samples * channels elements.
+  static void DuplicateInterleaved(const int16_t* source, size_t samples,
+                                   size_t channels, int16_t* destination);
+
+ private:
+  FILE* fp_;
+  DISALLOW_COPY_AND_ASSIGN(InputAudioFile);
+};
+
+}  // namespace test
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_