I did notice nacl64 and the 32-bit IRT missing from that package, but as the 64-bit IRT was there, I didn't give it much thought. It might have been caused by the build system migration.
The next release is being built right now; if those files are still being built, I'll include them manually.
pdf.dll seems not to be necessary anymore. Google Chrome Portable Stable & Dev don't include it.