Dictation: Speculative fix for flaky Dictation JS tests

According to the attached bug and the chromium flake portal [1], there
are flaky Dictation JavaScript tests. The most prominent one is
DictationE2ETest.SilencesSpokenFeedbackWhenStarting, which fails
with the following error:

AssertionError: expected '' to equal '_ext_ime_egfdjlfmgnehecnclamagfafdccgfndpdictation'

However, there are other tests that also flake with the same error.

I haven't been able to reproduce these flakes locally, even when
running many tests in parallel. The most likely cause for the flakes
is the NO_FOCUSED_IME timeout, which will stop Dictation (and reset
the active IME) if Dictation doesn't focus a text field before the
timeout runs (which is currently one second). This change attempts to
address the flakes by increasing the NO_FOCUSED_IME timeout so that
we guarantee that Dictation is never stopped by timeouts. We already
do this in C++ tests, so it makes sense to do the same in JS tests.

[1] https://luci-analysis.appspot.com/p/chromium/clusters?q=dictation

AX-Relnotes: N/A
Bug: b:260206802
Change-Id: I7927443514eaeaf3d677f969c3a881a82072af07
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4142282
Commit-Queue: Akihiro Ota <akihiroota@chromium.org>
Reviewed-by: Katie Dektar <katie@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1090186}
2 files changed
tree: d94f075825687912aacc9a13c2ea7ee19f55166c
  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. 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. .vpython3
  61. .yapfignore
  62. ATL_OWNERS
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. LICENSE
  70. LICENSE.chromium_os
  71. OWNERS
  72. PRESUBMIT.py
  73. PRESUBMIT_test.py
  74. PRESUBMIT_test_mocks.py
  75. README.md
  76. WATCHLISTS
README.md

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