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They're both cross-platform binaries/packages and not 64-bit specific. We're looking for them in the correct place, but they're located in the wrong place.
Potential follow-ups:
- We should use support_binaries to find these files.
- We should have support_binaries be more aware of cross-platform binaries.

BUG=None.
TEST=None.

Review URL: https://codereview.chromium.org/964403005

Cr-Commit-Position: refs/heads/master@{#318963}