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chromium/chromium/src/edd05b7e501e011180dfd4c53d98cf6d11ed8be2
commit
edd05b7e501e011180dfd4c53d98cf6d11ed8be2
[log]
author
kenoss <kenoss@chromium.org>
Mon Sep 01 16:15:02 2025
committer
Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com>
Mon Sep 01 16:15:02 2025
tree
8b02a4e486306e1786ef614a932d20dc21bf667c
parent
af994899645ae3c17c3e2a60443148a54d3006bc [diff]
PreloadServingMetrics: Record FCP

This CL adds UMAs

- `PreloadServingMetrics.PageLoad.Clients.PaintTiming.NavigationToFirstContentfulPaint.WithoutPreload`
- `PreloadServingMetrics.PageLoad.Clients.PaintTiming.NavigationToFirstContentfulPaint.WithPrefetch`
- `PreloadServingMetrics.PageLoad.Clients.PaintTiming.NavigationToFirstContentfulPaint.WithPrernder`

, which measure FCPs with preload usage.

No behavioral change if the feature is disabled.

Bug: 360094997
Change-Id: Ib47095b16a3a757bef905076fcc8970722adbb65
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6884381
Reviewed-by: Taiyo Mizuhashi <taiyo@chromium.org>
Commit-Queue: Ken Okada <kenoss@chromium.org>
Reviewed-by: Lingqi Chi <lingqi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1509226}
5 files changed
tree: 8b02a4e486306e1786ef614a932d20dc21bf667c
  1. .gemini/
  2. .github/
  3. agents/
  4. android_webview/
  5. apps/
  6. ash/
  7. base/
  8. build/
  9. build_overrides/
  10. buildtools/
  11. cc/
  12. chrome/
  13. chromecast/
  14. chromeos/
  15. codelabs/
  16. components/
  17. content/
  18. crypto/
  19. dbus/
  20. device/
  21. docs/
  22. extensions/
  23. fuchsia_web/
  24. gin/
  25. google_apis/
  26. gpu/
  27. headless/
  28. infra/
  29. ios/
  30. ipc/
  31. media/
  32. mojo/
  33. net/
  34. pdf/
  35. printing/
  36. remoting/
  37. rlz/
  38. sandbox/
  39. services/
  40. skia/
  41. sql/
  42. storage/
  43. styleguide/
  44. testing/
  45. third_party/
  46. tools/
  47. ui/
  48. url/
  49. webkit/
  50. clank
  51. clusterfuzz-data
  52. internal
  53. ios_internal
  54. signing_keys
  55. v8
  56. .clang-format
  57. .clang-tidy
  58. .clangd
  59. .cursorignore
  60. .geminiignore
  61. .git-blame-ignore-revs
  62. .gitallowed
  63. .gitattributes
  64. .gitignore
  65. .gitmodules
  66. .gn
  67. .mailmap
  68. .rustfmt.toml
  69. .vpython3
  70. .yapfignore
  71. ATL_OWNERS
  72. AUTHORS
  73. BUILD.gn
  74. CODE_OF_CONDUCT.md
  75. codereview.settings
  76. CPPLINT.cfg
  77. CRYPTO_OWNERS
  78. DEPS
  79. DIR_METADATA
  80. LICENSE
  81. LICENSE.chromium_os
  82. OWNERS
  83. PRESUBMIT.py
  84. PRESUBMIT_test.py
  85. PRESUBMIT_test_mocks.py
  86. README.md
  87. SECURITY_OWNERS
  88. WATCHLISTS
README.md

Logo Chromium

Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.

The project's web site is https://www.chromium.org.

To check out the source code locally, don't use git clone! Instead, follow the instructions on how to get the code.

Documentation in the source is rooted in docs/README.md.

Learn how to Get Around the Chromium Source Code Directory Structure.

For historical reasons, there are some small top level directories. Now the guidance is that new top level directories are for product (e.g. Chrome, Android WebView, Ash). Even if these products have multiple executables, the code should be in subdirectories of the product.

If you found a bug, please file it at https://crbug.com/new.