CCA: Add perf events for document scanning and OCR

Events added in this CL:
- DOCUMENT_CAPTURE_POST_PROCESSING: From shutter sound plays to image
  shown in review.
- DOCUMENT_PDF_SAVING: From "Save as PDF" clicked to review closed.
- OCR_SCANNING: From a snapshot of preview is scanned by OCR
  (automatically, with 500ms interval) to the scanned result is shown on
  the preview. The result might not be shown if it is empty or other
  scanners detected results.

No update is needed as this CL is adding new perf events.
METRICS_DOCUMENTATION_UPDATED=true

Test: Enable and check perf metrics logs
Test: tast run $brya camera.CCAUIDocumentScanning
Test: ash_webui_unittests --gtest_filter=CameraAppEventsSenderTest*
Bug: 338535966
Change-Id: I226945f620fc4819fb27494bd9d30c3f1242eac7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5587788
Reviewed-by: Dorah Kim <dorahkim@google.com>
Commit-Queue: Chu-Hsuan Yang <chuhsuan@chromium.org>
Reviewed-by: Andrew Bregger <andrewbregger@google.com>
Reviewed-by: Takashi Toyoshima <toyoshim@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1314417}
11 files changed
tree: 722f06f20b7ac8df18808587044110e5fa86a35f
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. codelabs/
  13. components/
  14. content/
  15. courgette/
  16. crypto/
  17. dbus/
  18. device/
  19. docs/
  20. extensions/
  21. fuchsia_web/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. media/
  31. mojo/
  32. native_client_sdk/
  33. net/
  34. pdf/
  35. ppapi/
  36. printing/
  37. remoting/
  38. rlz/
  39. sandbox/
  40. services/
  41. skia/
  42. sql/
  43. storage/
  44. styleguide/
  45. testing/
  46. third_party/
  47. tools/
  48. ui/
  49. url/
  50. webkit/
  51. .clang-format
  52. .clang-tidy
  53. .clangd
  54. .eslintrc.js
  55. .git-blame-ignore-revs
  56. .gitallowed
  57. .gitattributes
  58. .gitignore
  59. .gitmodules
  60. .gn
  61. .mailmap
  62. .rustfmt.toml
  63. .vpython3
  64. .yapfignore
  65. ATL_OWNERS
  66. AUTHORS
  67. BUILD.gn
  68. CODE_OF_CONDUCT.md
  69. codereview.settings
  70. CPPLINT.cfg
  71. DEPS
  72. DIR_METADATA
  73. LICENSE
  74. LICENSE.chromium_os
  75. OWNERS
  76. PRESUBMIT.py
  77. PRESUBMIT_test.py
  78. PRESUBMIT_test_mocks.py
  79. README.md
  80. WATCHLISTS
README.md

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