Getting rid of duplicate includes from media/

media/midi/midi_manager_alsa.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 "media/midi/midi_manager_alsa.h"
 
-#include <alsa/asoundlib.h>
 #include <poll.h>
 #include <stdlib.h>
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/safe_strerror_posix.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
-#include "base/threading/thread.h"
 #include "base/time/time.h"
-#include "base/values.h"
 #include "crypto/sha2.h"
 #include "media/midi/midi_port_info.h"
 
 namespace media {
 namespace midi {
 
 namespace {
 
 // Per-output buffer. This can be smaller, but then large sysex messages
 // will be (harmlessly) split across multiple seq events. This should
@@ skipping 1323 matching lines @@
   source_map_[AddrToInt(client_id, port_id)] = port_index;
   return true;
 }
 
 MidiManager* MidiManager::Create() {
   return new MidiManagerAlsa();
 }
 
 }  // namespace midi
 }  // namespace media