Bug 1079653 (Part 1) - Move decode telemetry data from DecodeRequest to Decoder. r=tn
Bug 1079653 (Part 2) - Remove DecodeRequest::mBytesToDecode. r=tn
Bug 1079653 (Part 3) - Make decoders track whether they need to flush data after getting a new frame. r=tn
Bug 1079653 (Part 4) - Move decode status tracking onto RasterImage and remove DecodeRequest. r=tn