Don't double correct for discarded codec delay frames.

media/ffmpeg/ffmpeg_common.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/ffmpeg/ffmpeg_common.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 252 matching lines @@
     case kSampleFormatPlanarS16:
       return AV_SAMPLE_FMT_S16P;
     case kSampleFormatPlanarF32:
       return AV_SAMPLE_FMT_FLTP;
     default:
       DVLOG(1) << "Unknown SampleFormat: " << sample_format;
   }
   return AV_SAMPLE_FMT_NONE;
 }
 
-static void AVCodecContextToAudioDecoderConfig(
+void AVCodecContextToAudioDecoderConfig(
     const AVCodecContext* codec_context,
     bool is_encrypted,
     AudioDecoderConfig* config,
     bool record_stats) {
   DCHECK_EQ(codec_context->codec_type, AVMEDIA_TYPE_AUDIO);
 
   AudioCodec codec = CodecIDToAudioCodec(codec_context->codec_id);
 
   SampleFormat sample_format =
       AVSampleFormatToSampleFormat(codec_context->sample_fmt);
@@ skipping 288 matching lines @@
       return false;
 
     *out = parsed_time;
     return true;
   }
 
   return false;
 }
 
 }  // namespace media