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chromium / chromium / src / 339bcd998b16c2069c2b7aab39b10cb07ff50eca
commit339bcd998b16c2069c2b7aab39b10cb07ff50eca[log] [tgz]
authorXianzhu Wang <wangxianzhu@chromium.org>Sun Nov 19 18:46:22 2023
committerChromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com>Sun Nov 19 18:46:22 2023
tree68452879304184007386978537ac60f4fb01a20e
parentb318a28f33bd062c2dc4759fd54bed5188a88e49 [diff]
[IntersectionOptimization] Accumulate scroll delta per IntersectionObservation

UMA metrics added in crrev.com/1193840 show that most
IntersectionObservations have big min_scroll_delta_to_update, but
most LocalFrameViews have very small min_scroll_delta_to_update. This
means that a few IntersectionObservations with small
min_scroll_delta_to_update cause the optimization not effective.

Now track accumulated scroll delta per IntersectionObservation so that
we can still skip update for a IntersectionObservation with a big
min_scroll_delta_to_update despite other IntersectionObservations with
small min_scroll_delta_to_update.

Bug: 1400495
Change-Id: I69ec0f80248a9fb8b1120d2d84df703c5e6f6597
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4906672
Reviewed-by: Stefan Zager <szager@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1226578}
18 files changed
tree: 68452879304184007386978537ac60f4fb01a20e
  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. clank
  52. internal
  53. ios_internal
  54. native_client
  55. signing_keys
  56. v8
  57. .clang-format
  58. .clang-tidy
  59. .eslintrc.js
  60. .git-blame-ignore-revs
  61. .gitattributes
  62. .gitignore
  63. .gitmodules
  64. .gn
  65. .mailmap
  66. .rustfmt.toml
  67. .vpython3
  68. .yapfignore
  69. ATL_OWNERS
  70. AUTHORS
  71. BUILD.gn
  72. CODE_OF_CONDUCT.md
  73. codereview.settings
  74. DEPS
  75. DIR_METADATA
  76. LICENSE
  77. LICENSE.chromium_os
  78. OWNERS
  79. PRESUBMIT.py
  80. PRESUBMIT_test.py
  81. PRESUBMIT_test_mocks.py
  82. README.md
  83. 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.