Speculative fix for UAF in video recording watcher

VideoRecordingWatcher schedules a timer to handle window size changes
whenever recorded window size changes. When fired the timer callback
tries to get size from the recorded window, assuming that it's safe to
access the recorded window while video recording watcher is in scope.
The video recording watcher observes the recorded window, and ends video
recording when the recoded window gets deleted (which ends up calling
VideoRecordingWatcher::Shutdown()), but this does not delete the video
recording object immediately, so the window size change timer may
outlive the recorded window.

This CL stops the window size change throttle timer when the video
recording watcher is shutdown.

BUG=1323553

Change-Id: If374e44fe813eaa770a8d08aaa811fa2ce18da08
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3636561
Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Toni Barzic <tbarzic@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1001254}
1 file changed
tree: eb9af353d0576bb121f364f7055b71d6d372bd6f
  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/
  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. weblayer/
  51. .clang-format
  52. .clang-tidy
  53. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitattributes
  56. .gitignore
  57. .gn
  58. .mailmap
  59. .rustfmt.toml
  60. .vpython
  61. .vpython3
  62. .yapfignore
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. ENG_REVIEW_OWNERS
  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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