Getting rid of duplicate includes from media/

media/audio/audio_output_controller.cc

 // Copyright (c) 2012 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/audio/audio_output_controller.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/task_runner_util.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
-#include "build/build_config.h"
 
 using base::TimeDelta;
 
 namespace media {
 
 AudioOutputController::AudioOutputController(
     AudioManager* audio_manager,
     EventHandler* handler,
     const AudioParameters& params,
     const std::string& output_device_id,
@@ skipping 384 matching lines @@
   DCHECK(message_loop_->BelongsToCurrentThread());
 
   // If we should be playing and we haven't, that's a wedge.
   if (state_ == kPlaying) {
     UMA_HISTOGRAM_BOOLEAN("Media.AudioOutputControllerPlaybackStartupSuccess",
                           base::AtomicRefCountIsOne(&on_more_io_data_called_));
   }
 }
 
 }  // namespace media