[ledger_client] Add fit::promise<> wrappers for some common Ledger API calls.

These wrappers turn various Page and PageSnapshot calls into
fit::promise<> equivalents. Where a ledger.Status is returned, an OK
status is translated into an ok() result, and any other value is
translated into an error() result.

TEST=future CLs exercise these methods

Change-Id: I556cb1267edad4d0284a16c9e3b07def71837dc2
2 files changed
tree: 7b8304825aa61c309f47a9a2ebfe2212e7f1edbd
  1. .clang-format
  2. .clang-tidy
  3. .gitignore
  4. AUTHORS
  5. BUILD.gn
  6. CONTRIBUTING.md
  7. LICENSE
  8. PATENTS
  9. README.md
  10. bin/
  11. boards/
  12. build/
  13. cloud/
  14. docs/
  15. examples/
  16. infra/
  17. lib/
  18. navbar.md
  19. packages/
  20. products/
  21. public/
  22. tests/
  23. third_party/
  24. web/
README.md

Peridot

Peridot is a framework for composed, intelligent and distributed user experiences.

Applications not explicitly designed to interoperate (and possibly implemented in different programming languages) are ephemerally downloaded and dynamically composed to run in a shared context. The framework manages application lifecycle, resources and view hierarchy; and well as context and suggestion infrastructure.

State of Peridot experiences is transparently synchronized across user devices using a distributed offline-first storage system.

Read more