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- Specify format of NMH manifest.
- Specify the expected locations of the NMH on all platforms.
- Fully document the communication protocol and constraints.
- Document every error and offer tips for resolving the issues.
- Document other common problems and how-to-solve.

BUG=377582
R=sergeyu@chromium.org,kalman@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/768373004

Cr-Commit-Position: refs/heads/master@{#308420}