[media] Clarify FIDL disconnect messages

Per MTWN-237, update the FIDL disconnect messages for the
primary audio utilities for developers (signal_generator,
vol, wav_recorder) and the Audio (policy) service, to make
it clear that when the AudioCore service disconnects, these
are failures of the client connection, which might simply
be a client permissions issue (as opposed to a deeper system
failure).

Also, for the three audio utilities, display the error code
that has been passed to the error handler as the "epitaph".

BUG: MTWN-237 #done

TEST: build, CQ, manually verify error messages from vol,
signal_generator and wav_recorder on qemu without -g (thus
running in the serial console, without access to AudioCore).

Change-Id: I2980be6c44b9624c3ee40954c881655fc8078eb8
4 files changed
tree: 81b98bf251cdbcb5d5141c436b4495afceb2e13a
  1. boards/
  2. build/
  3. buildtools/
  4. bundles/
  5. docs/
  6. garnet/
  7. peridot/
  8. products/
  9. scripts/
  10. sdk/
  11. src/
  12. zircon/
  13. .clang-format
  14. .dir-locals.el
  15. .gitattributes
  16. .gitignore
  17. .gn
  18. AUTHORS
  19. CODE_OF_CONDUCT.md
  20. CONTRIBUTING.md
  21. LICENSE
  22. OWNERS
  23. PATENTS
  24. README.md
  25. rustfmt.toml
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See the documentation.