Update a bunch of files to the new location of browser_thread.h

chrome/browser/chromeos/audio_mixer_alsa.cc

 // Copyright (c) 2010 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 "chrome/browser/chromeos/audio_mixer_alsa.h"
 
 #include <cmath>
 
 #include <alsa/asoundlib.h>
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/task.h"
 #include "base/threading/thread_restrictions.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/browser_thread.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
+#include "content/browser/browser_thread.h"
 
 namespace chromeos {
 
 // Connect to the ALSA mixer using their simple element API.  Init is performed
 // asynchronously on the worker thread.
 //
 // To get a wider range and finer control over volume levels, first the Master
 // level is set, then if the PCM element exists, the total level is refined by
 // adjusting that as well.  If the PCM element has more volume steps, it allows
 // for finer granularity in the total volume.
@@ skipping 484 matching lines @@
   if (alsa_result != 0) {
     LOG(WARNING) << "snd_mixer_selem_set_playback_switch_all() failed: "
                  << snd_strerror(alsa_result);
   } else {
     VLOG(1) << "Set playback switch " << snd_mixer_selem_get_name(elem)
             << " to " << enabled;
   }
 }
 
 }  // namespace chromeos