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diff --git a/chromium/media/audio/alsa/audio_manager_alsa.h b/chromium/media/audio/alsa/audio_manager_alsa.h
new file mode 100644
index 00000000000..155089f06bc
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+++ b/chromium/media/audio/alsa/audio_manager_alsa.h
@@ -0,0 +1,94 @@
+// Copyright 2013 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.
+
+#ifndef MEDIA_AUDIO_ALSA_AUDIO_MANAGER_ALSA_H_
+#define MEDIA_AUDIO_ALSA_AUDIO_MANAGER_ALSA_H_
+
+#include <string>
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/threading/thread.h"
+#include "media/audio/audio_manager_base.h"
+
+namespace media {
+
+class AlsaWrapper;
+
+class MEDIA_EXPORT AudioManagerAlsa : public AudioManagerBase {
+ public:
+  AudioManagerAlsa(AudioLogFactory* audio_log_factory);
+
+  static void ShowLinuxAudioInputSettings();
+
+  // Implementation of AudioManager.
+  virtual bool HasAudioOutputDevices() OVERRIDE;
+  virtual bool HasAudioInputDevices() OVERRIDE;
+  virtual void ShowAudioInputSettings() OVERRIDE;
+  virtual void GetAudioInputDeviceNames(
+      AudioDeviceNames* device_names) OVERRIDE;
+  virtual void GetAudioOutputDeviceNames(
+      AudioDeviceNames* device_names) OVERRIDE;
+  virtual AudioParameters GetInputStreamParameters(
+      const std::string& device_id) OVERRIDE;
+
+  // Implementation of AudioManagerBase.
+  virtual AudioOutputStream* MakeLinearOutputStream(
+      const AudioParameters& params) OVERRIDE;
+  virtual AudioOutputStream* MakeLowLatencyOutputStream(
+      const AudioParameters& params,
+      const std::string& device_id,
+      const std::string& input_device_id) OVERRIDE;
+  virtual AudioInputStream* MakeLinearInputStream(
+      const AudioParameters& params, const std::string& device_id) OVERRIDE;
+  virtual AudioInputStream* MakeLowLatencyInputStream(
+      const AudioParameters& params, const std::string& device_id) OVERRIDE;
+
+ protected:
+  virtual ~AudioManagerAlsa();
+
+  virtual AudioParameters GetPreferredOutputStreamParameters(
+      const std::string& output_device_id,
+      const AudioParameters& input_params) OVERRIDE;
+
+ private:
+  enum StreamType {
+    kStreamPlayback = 0,
+    kStreamCapture,
+  };
+
+  // Gets a list of available ALSA devices.
+  void GetAlsaAudioDevices(StreamType type,
+                           media::AudioDeviceNames* device_names);
+
+  // Gets the ALSA devices' names and ids that support streams of the
+  // given type.
+  void GetAlsaDevicesInfo(StreamType type,
+                          void** hint,
+                          media::AudioDeviceNames* device_names);
+
+  // Checks if the specific ALSA device is available.
+  static bool IsAlsaDeviceAvailable(StreamType type,
+                                    const char* device_name);
+
+  static const char* UnwantedDeviceTypeWhenEnumerating(
+      StreamType wanted_type);
+
+  // Returns true if a device is present for the given stream type.
+  bool HasAnyAlsaAudioDevice(StreamType stream);
+
+  // Called by MakeLinearOutputStream and MakeLowLatencyOutputStream.
+  AudioOutputStream* MakeOutputStream(const AudioParameters& params);
+
+  // Called by MakeLinearInputStream and MakeLowLatencyInputStream.
+  AudioInputStream* MakeInputStream(const AudioParameters& params,
+                                    const std::string& device_id);
+
+  scoped_ptr<AlsaWrapper> wrapper_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioManagerAlsa);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_AUDIO_ALSA_AUDIO_MANAGER_ALSA_H_