Merge "Change the parameter type of offset in read"

    FileReader(FILE* fp) : Reader(), fp_(fp), current_offset_(0) {

    }

    bool ReadAtOffset(uint8_t* buf, size_t len, uint32_t offset) const {

    bool ReadAtOffset(uint8_t* buf, size_t len, off64_t offset) const {

        // Data is usually requested sequentially, so this helps avoid pointless

        // fseeks every time we perform a read. There's an impedence mismatch

        // here because the original API was designed around pread and pwrite.

  private:

    FILE* fp_;

    mutable uint32_t current_offset_;

    mutable off64_t current_offset_;

};

// free the memory when you're done