Gray out cycles to the start object in the Retainers pane

In the Retainers pane, any object which is already opened at a higher
level of the tree should be shown as gray and not provide the option to
expand it further, to prevent the developer from accidentally traversing
cycles. This functionality doesn't work, however, when the cycle is to
the very first object which the user had originally selected. This CL
sets the snapshot node ID on the root node of the Retainers pane so that
findAncestorWithSameSnapshotNodeId can correctly determine when there is
a cycle back to that starting node.

Bug: 40805497
Change-Id: Ic9501944fa6d48855f055516839a6891d2a2c0e6
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5273876
Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
4 files changed
tree: 057f2afc543ed777f6d8acf36877a0690aed505b
  1. .vscode/
  2. build_overrides/
  3. config/
  4. docs/
  5. extension-api/
  6. extensions/
  7. front_end/
  8. inspector_overlay/
  9. node_modules/
  10. scripts/
  11. test/
  12. third_party/
  13. v8/
  14. .clang-format
  15. .editorconfig
  16. .eslintignore
  17. .eslintrc.js
  18. .git-blame-ignore-revs
  19. .gitattributes
  20. .gitignore
  21. .gitmodules
  22. .gn
  23. .mailmap
  24. .npmignore
  25. .npmrc
  26. .style.yapf
  27. .stylelintignore
  28. .stylelintrc.json
  29. AUTHORS
  30. BUILD.gn
  31. codereview.settings
  32. DEPS
  33. LICENSE
  34. OWNERS
  35. package-lock.json
  36. package.json
  37. PRESUBMIT.py
  38. README.md
  39. tsconfig.json
  40. WATCHLISTS
README.md

Chrome DevTools frontend

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The client-side of the Chrome DevTools, including all TypeScript & CSS to run the DevTools webapp.

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