Revert "[Blink Heap]: Marking uses jobs API."

This reverts commit 03474222003788e3e91053d1212a66580ff1218c.

Reason for revert: Suspected for failures in WebGL tests.
See issue for more details.

Bug: 1062940

Original change's description:
> [Blink Heap]: Marking uses jobs API.
> 
> Note: This CL enables feature BlinkHeapConcurrentMarking to get
> the desired behavior. However, we should land enabling
> BlinkHeapConcurrentMarking on its own first.
> 
> active_markers + GlobalPoolSize() is used to determine
> the desired number of workers.
> 
> NotifyConcurrencyIncrease() is called periodically from
> ConcurrentMarkingStep() if GlobalPoolSize() > 0,
> to make sure enough workers are scheduled.
> 
> CancelableTaskScheduler is no longer used and deleted in this CL.
> 
> Benchmark v8.browsing_desktop on win-10-perf browse:news:cnn:2018:
> blink-gc-atomic-pause-mark-transitive-closure: 13% improvement
> blink-gc-atomic-pause-sweep-and-compact: 5% improvement
> blink-gc-complete-sweep: 34% improvement
> blink-gc-total: 2% improvement
> https://pinpoint-dot-chromeperf.appspot.com/job/136a60ce620000
> 
> Bug: 1046343
> Change-Id: Ie2957abf200037ccacc017b1e38dc41f47811ee0
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2029609
> Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Reviewed-by: Kentaro Hara <haraken@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#751502}

TBR=haraken@chromium.org,mlippautz@chromium.org,etiennep@chromium.org,omerkatz@chromium.org

Change-Id: I14a613a4fb54de640505d384c53b89507d02b1c9
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1046343
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2109970
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#751668}
8 files changed
tree: 488fca9a7e6b50b2be927aa2939772cf0d12e6ad
  1. .clang-format
  2. .clang-tidy
  3. .eslintrc.js
  4. .git-blame-ignore-revs
  5. .gitattributes
  6. .gitignore
  7. .gn
  8. .vpython
  9. .vpython3
  10. .yapfignore
  11. AUTHORS
  12. BUILD.gn
  13. CODE_OF_CONDUCT.md
  14. DEPS
  15. ENG_REVIEW_OWNERS
  16. LICENSE
  17. LICENSE.chromium_os
  18. OWNERS
  19. PRESUBMIT.py
  20. PRESUBMIT_test.py
  21. PRESUBMIT_test_mocks.py
  22. README.md
  23. WATCHLISTS
  24. android_webview/
  25. apps/
  26. ash/
  27. base/
  28. build/
  29. build_overrides/
  30. buildtools/
  31. cc/
  32. chrome/
  33. chromecast/
  34. chromeos/
  35. cloud_print/
  36. codereview.settings
  37. components/
  38. content/
  39. courgette/
  40. crypto/
  41. dbus/
  42. device/
  43. docs/
  44. extensions/
  45. fuchsia/
  46. gin/
  47. google_apis/
  48. google_update/
  49. gpu/
  50. headless/
  51. infra/
  52. ios/
  53. ipc/
  54. jingle/
  55. media/
  56. mojo/
  57. native_client_sdk/
  58. net/
  59. pdf/
  60. ppapi/
  61. printing/
  62. remoting/
  63. rlz/
  64. sandbox/
  65. services/
  66. skia/
  67. sql/
  68. storage/
  69. styleguide/
  70. testing/
  71. third_party/
  72. tools/
  73. ui/
  74. url/
  75. weblayer/
README.md

Logo Chromium

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

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

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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.