Refactored DataBuffer to use unix_hacker style methods.

media/filters/ffmpeg_audio_decoder.cc

Index: media/filters/ffmpeg_audio_decoder.cc
diff --git a/media/filters/ffmpeg_audio_decoder.cc b/media/filters/ffmpeg_audio_decoder.cc
index f8cea3888a75ddd132f1349051a198954c1c4621..7754a4997c3fe5681a040cf1a583d2a2ba59d096 100644
--- a/media/filters/ffmpeg_audio_decoder.cc
+++ b/media/filters/ffmpeg_audio_decoder.cc
@@ -470,19 +470,19 @@ void FFmpegAudioDecoder::RunDecodeLoop(
         }
 
         output = new DataBuffer(decoded_audio_size);
-        output->SetDataSize(decoded_audio_size);
+        output->set_data_size(decoded_audio_size);
 
         DCHECK_EQ(frames_to_interleave, converter_bus_->frames() - skip_frames);
         converter_bus_->ToInterleavedPartial(
             skip_frames, frames_to_interleave, bits_per_channel_ / 8,
-            output->GetWritableData());
+            output->writable_data());
       } else {
         output = DataBuffer::CopyFrom(
             av_frame_->extended_data[0] + start_sample * bytes_per_frame_,
             decoded_audio_size);
       }
-      output->SetTimestamp(output_timestamp_helper_->GetTimestamp());
-      output->SetDuration(
+      output->set_timestamp(output_timestamp_helper_->GetTimestamp());
+      output->set_duration(
           output_timestamp_helper_->GetDuration(decoded_audio_size));
       output_timestamp_helper_->AddBytes(decoded_audio_size);
     } else if (IsEndOfStream(result, decoded_audio_size, input) &&