tp: speed up queries in chrome_tasks

This CL does the following:
* adds an index on chrome_mojo_slices_tbl which is necessary as we
  often query this table by id.
* removes the temporary mitigation from aosp/2195476 for chrome_tasks
* adds some functions to make code easier to follow
* removes unnecessary ORDER BYs which slightly reduce performance
* fold some tables which do not need to be exposed at the top level into
  WITH statements
* rename some tables for better clarity

On the chrome_page_load_all_categories_not_extended.pftrace.gz trace:
* Before SQLite bump: 990ms
* After SQLite bump (before mitigation): 1500ms
* After this CL: 890ms (10% improvement from before)

Change-Id: Ie9636b32bc0eba43755ffce6d23eb029d17ab1a4
Bug: 243897379
6 files changed
tree: 9c546b73980dc05c3a3457128054f94da78c57ae
  1. .github/
  2. bazel/
  3. build_overrides/
  4. buildtools/
  5. debian/
  6. docs/
  7. examples/
  8. gn/
  9. include/
  10. infra/
  11. protos/
  12. python/
  13. src/
  14. test/
  15. tools/
  16. ui/
  17. .clang-format
  18. .clang-tidy
  19. .gitattributes
  20. .gitignore
  21. .gn
  22. .style.yapf
  23. Android.bp
  24. Android.bp.extras
  25. BUILD
  26. BUILD.extras
  27. BUILD.gn
  28. CHANGELOG
  29. codereview.settings
  30. DIR_METADATA
  31. heapprofd.rc
  32. LICENSE
  33. meson.build
  34. METADATA
  35. MODULE_LICENSE_APACHE2
  36. OWNERS
  37. perfetto.rc
  38. PerfettoIntegrationTests.xml
  39. PRESUBMIT.py
  40. README.chromium
  41. README.md
  42. TEST_MAPPING
  43. traced_perf.rc
  44. WORKSPACE
README.md

Perfetto - System profiling, app tracing and trace analysis

Perfetto is a production-grade open-source stack for performance instrumentation and trace analysis. It offers services and libraries and for recording system-level and app-level traces, native + java heap profiling, a library for analyzing traces using SQL and a web-based UI to visualize and explore multi-GB traces.

See https://perfetto.dev/docs or the /docs/ directory for documentation.