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..66544c31b51aff5351b05b3aa4ebe29528971182 100644
--- a/media/filters/ffmpeg_audio_decoder.cc
+++ b/media/filters/ffmpeg_audio_decoder.cc
@@ -470,25 +470,25 @@ 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->get_writable_data());
       } else {
-        output = DataBuffer::CopyFrom(
+        output = DataBuffer::copy_from(
             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) &&
                !skip_eos_append) {
       DCHECK_EQ(packet.size, 0);
-      output = DataBuffer::CreateEOSBuffer();
+      output = DataBuffer::create_eos_buffer();
     }
 
     if (output.get()) {