Reverts "Implement frame timing callbacks in Skwasm. (#50737)" (#50895)

Reverts flutter/engine#50737

Initiated by: goderbauer

Reason for reverting: Fails in device lab, see https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket/8755350727803344657/+/u/run_web_benchmarks_skwasm/stdout

Original PR Author: eyebrowsoffire

Reviewed By: {mdebbar, yjbanov}

This change reverts the following previous change:
Original Description:
Fixes https://github.com/flutter/flutter/issues/140429

Some notes here:
* Refactored the frame timing systems so that we can deal with asynchronous rendering.
* Consolidated rendering of multiple pictures in skwasm into a single call, so that the rasterization can be properly measured.
* Pulled the frame timings tests into the `ui` test suite so that they run on all renderers (including skwasm).
25 files changed
tree: 9e31c5cbbba6c7d9d794b8949e44bb4dbfa5054b
  1. .github/
  2. assets/
  3. benchmarking/
  4. bin/
  5. build/
  6. ci/
  7. common/
  8. display_list/
  9. docs/
  10. examples/
  11. flow/
  12. flutter_frontend_server/
  13. flutter_vma/
  14. fml/
  15. impeller/
  16. lib/
  17. runtime/
  18. shell/
  19. skia/
  20. sky/
  21. testing/
  22. third_party/
  23. tools/
  24. vulkan/
  25. wasm/
  26. web_sdk/
  27. .ci.yaml
  28. .clang-format
  29. .clang-tidy
  30. .gitattributes
  31. .gitignore
  32. .pylintrc
  33. .style.yapf
  34. analysis_options.yaml
  35. AUTHORS
  36. BUILD.gn
  37. CODEOWNERS
  38. CONTRIBUTING.md
  39. DEPS
  40. Doxyfile
  41. LICENSE
  42. README.md
README.md

Flutter Engine

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