mac: Prepare for -Wunused-functions.

media/filters/opus_audio_decoder.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/filters/opus_audio_decoder.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 14 matching lines @@
 namespace media {
 
 static uint16 ReadLE16(const uint8* data, size_t data_size, int read_offset) {
   DCHECK(data);
   uint16 value = 0;
   DCHECK_LE(read_offset + sizeof(value), data_size);
   memcpy(&value, data + read_offset, sizeof(value));
   return base::ByteSwapToLE16(value);
 }
 
-// Returns true if the decode result was end of stream.
-static inline bool IsEndOfStream(int decoded_size,
-                                 const scoped_refptr<DecoderBuffer>& input) {
-  // Two conditions to meet to declare end of stream for this decoder:
-  // 1. Opus didn't output anything.
-  // 2. An end of stream buffer is received.
-  return decoded_size == 0 && input->end_of_stream();
-}
-
 static int TimeDeltaToAudioFrames(base::TimeDelta time_delta,
                                   int frame_rate) {
   return std::ceil(time_delta.InSecondsF() * frame_rate);
 }
 
 // The Opus specification is part of IETF RFC 6716:
 // http://tools.ietf.org/html/rfc6716
 
 // Opus uses Vorbis channel mapping, and Vorbis channel mapping specifies
 // mappings for up to 8 channels. This information is part of the Vorbis I
@@ skipping 558 matching lines @@
   PipelineStatistics statistics;
   statistics.audio_bytes_decoded =
       frames_decoded *
       demuxer_stream_->audio_decoder_config().bytes_per_frame();
   statistics_cb_.Run(statistics);
 
   return true;
 }
 
 }  // namespace media