PipelineMetadataCB   75 media/base/pipeline.cc                      const PipelineMetadataCB& metadata_cb,
PipelineMetadataCB  111 media/base/pipeline.h              const PipelineMetadataCB& metadata_cb,
PipelineMetadataCB  411 media/base/pipeline.h   PipelineMetadataCB metadata_cb_;