283 static bool Read(FILE* fp, off_t size, T* out_p) {  in Read()  argument
296     AppendBytes(buf, nbytes, out_p);  in Read()
315                                    T* out_p) {  in ReadFileChunkAndAppend()  argument
329   return Read(fp.get(), size, out_p);  in ReadFileChunkAndAppend()
334 bool ReadPipe(const string& cmd, string* out_p) {  in ReadPipe()  argument
338   bool success = Read(fp, -1, out_p);  in ReadPipe()
342 bool ReadFile(const string& path, brillo::Blob* out_p) {  in ReadFile()  argument
343   return ReadFileChunkAndAppend(path, 0, -1, out_p);  in ReadFile()
346 bool ReadFile(const string& path, string* out_p) {  in ReadFile()  argument
347   return ReadFileChunkAndAppend(path, 0, -1, out_p);  in ReadFile()
353                    brillo::Blob* out_p) {  in ReadFileChunk()  argument
354   return ReadFileChunkAndAppend(path, offset, size, out_p);  in ReadFileChunk()