[memprof] Upgrade a unit test to MemProf Version 3 (#117063) This patch upgrades a unit test to MemProf Version 3 while removing those bits that cannot be upgraded to Version 3. The bits being removed expect instrprof_error::hash_mismatch from a broken MemProf profile that references a frame that doesn't actually exist. Now, Version 3 no longer issues instrprof_error::hash_mismatch. Even if it still issued instrprof_error::hash_mismatch, we would have a couple of hurdles: - InstrProfWriter::addMemProfData will soon require all (or none) of the fields (frames, call stacks, and records) be populated. That is, it won't accept an instance of IndexedMemProfData with frames missing. - writeMemProfV3 asserts that every frame occurs at least once: assert(MemProfData.Frames.size() == FrameHistogram.size()); This patch gives up on instrprof_error::hash_mismatch and tries to trigger instrprof_error::unknown_function with the empty profile.
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