Merge "Measure time flushing completed videos to storage"

    if (!truncatePreAllocation()) {

        if (err == OK) { err = ERROR_IO; }

    }

    // TODO(b/174770856) remove this measurement (and perhaps the fsync)

    nsecs_t sync_started = systemTime(SYSTEM_TIME_REALTIME);

    if (fsync(mFd) != 0) {

        ALOGW("(ignored)fsync err:%s(%d)", std::strerror(errno), errno);

        // Don't bubble up fsync error, b/157291505.

        // if (err == OK) { err = ERROR_IO; }

    }

    nsecs_t sync_finished = systemTime(SYSTEM_TIME_REALTIME);

    nsecs_t sync_elapsed_ns = sync_finished - sync_started;

    int64_t filesize = -1;

    struct stat statbuf;

    if (fstat(mFd, &statbuf) == 0) {

        filesize = statbuf.st_size;

    }

    ALOGD("final fsync() takes %" PRId64 " ms, file size %" PRId64,

          sync_elapsed_ns / 1000000, (int64_t) filesize);

    if (close(mFd) != 0) {

        ALOGE("close err:%s(%d)", std::strerror(errno), errno);

        if (err == OK) { err = ERROR_IO; }