Clean up sparse_histogram.h header

content/renderer/pepper/content_decryptor_delegate.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 "content/renderer/pepper/content_decryptor_delegate.h"
 
 #include <string.h>
 #include <utility>
 #include <vector>
 
 #include "base/callback_helpers.h"
 #include "base/macros.h"
-#include "base/metrics/sparse_histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/trace_event/trace_event.h"
 #include "content/renderer/pepper/ppb_buffer_impl.h"
 #include "media/base/audio_buffer.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/base/cdm_key_information.h"
 #include "media/base/channel_layout.h"
 #include "media/base/data_buffer.h"
 #include "media/base/decoder_buffer.h"
@@ skipping 1230 matching lines @@
                                           empty_frames);
   }
 
   if (!video_decode_cb_.is_null())
     video_decode_cb_.ResetAndReturn().Run(media::Decryptor::kError, NULL);
 
   cdm_promise_adapter_.Clear();
 }
 
 }  // namespace content