[feedback] switch GetData() to fit::promise

* this allows us to integrate with asynchronous attachment providers (LogListener and Inspect) without having to run a second loop, which seems flaky
* we use a fit::bridge to control when and how to complete: success in Done() and failure in FIDL errors or timeout

DX-465 #comment
FLK-173 #comment

TESTED=`fx run-test feedback_agent_tests`
TESTED=`fx run-test crashpad_agent_tests`
TESTED=`fx crasher`

Change-Id: I762a93d6ff8b9164c5cb1eb332aed7061607d7f0
9 files changed
tree: 4109c3a407abebe830da226e760bd800d83803cb
  1. boards/
  2. build/
  3. buildtools/
  4. bundles/
  5. docs/
  6. examples/
  7. garnet/
  8. peridot/
  9. products/
  10. scripts/
  11. sdk/
  12. src/
  13. third_party/
  14. tools/
  15. zircon/
  16. .clang-format
  17. .dir-locals.el
  18. .gitattributes
  19. .gitignore
  20. .gn
  21. AUTHORS
  22. BUILD.gn
  23. CODE_OF_CONDUCT.md
  24. CONTRIBUTING.md
  25. LICENSE
  26. OWNERS
  27. PATENTS
  28. README.md
  29. 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.