PageLoadMetrics: Update PreviewPageLoadMetricsObserver

Add a new PageVisitType, kHistoryVisit, to represent the case
where the page navigation happens through the back forward
interfaces.
Before this change, such navigation is marked as an origin
visit, and reported as kOrigin or kIndependent type visit
if it doesn't hit the BFCache.
Nothing is changed for the BFCache hit case, not reporting
separate reports for restored visits.

Bug: b/299566150
Change-Id: I2165ee7af6bc4ad2437527ba32267459946ed270
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4867952
Commit-Queue: Takashi Toyoshima <toyoshim@chromium.org>
Reviewed-by: Ken Okada <kenoss@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1198912}
5 files changed
tree: b29600e59d953912e36be65290ed41d4867b56c0
  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. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitattributes
  56. .gitignore
  57. .gitmodules
  58. .gn
  59. .mailmap
  60. .rustfmt.toml
  61. .vpython3
  62. .yapfignore
  63. ATL_OWNERS
  64. AUTHORS
  65. BUILD.gn
  66. CODE_OF_CONDUCT.md
  67. codereview.settings
  68. DEPS
  69. DIR_METADATA
  70. LICENSE
  71. LICENSE.chromium_os
  72. OWNERS
  73. PRESUBMIT.py
  74. PRESUBMIT_test.py
  75. PRESUBMIT_test_mocks.py
  76. README.md
  77. WATCHLISTS
README.md

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