Reland "Launch Lens image search on desktop at ToT."

This fixes the broken unit test by enabling the feature param directly in the test.
This does not fix any aforementioned latency issues.

This is a reland of b6f385ec3db1423580cabd0f5a2e4281c341cd44

Original change's description:
> Launch Lens image search on desktop at ToT.
>
> Also disables the image search URL change if on a non-desktop platform.
>
> Bug: 1168677, 1222313
> Change-Id: I855e3838e344ba260b8829a2f8cc355f2c31e2da
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3328902
> Reviewed-by: Ben Goldberger <benwgold@google.com>
> Reviewed-by: Orin Jaworski <orinj@chromium.org>
> Commit-Queue: Juan Mojica <juanmojica@google.com>
> Cr-Commit-Position: refs/heads/main@{#951102}

Bug: 1168677, 1222313
Change-Id: I5af7d720dbff2f9ee13422758fa094a03a40b896
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3338437
Reviewed-by: Orin Jaworski <orinj@chromium.org>
Reviewed-by: Ben Goldberger <benwgold@google.com>
Commit-Queue: Juan Mojica <juanmojica@google.com>
Cr-Commit-Position: refs/heads/main@{#951753}
3 files changed
tree: 2eca171ea5b851805cb378b66798bcf637dc0c94
  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. cloud_print/
  13. codelabs/
  14. components/
  15. content/
  16. courgette/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia/
  23. gin/
  24. google_apis/
  25. google_update/
  26. gpu/
  27. headless/
  28. infra/
  29. ios/
  30. ipc/
  31. jingle/
  32. media/
  33. mojo/
  34. native_client_sdk/
  35. net/
  36. pdf/
  37. ppapi/
  38. printing/
  39. remoting/
  40. rlz/
  41. sandbox/
  42. services/
  43. skia/
  44. sql/
  45. storage/
  46. styleguide/
  47. testing/
  48. third_party/
  49. tools/
  50. ui/
  51. url/
  52. weblayer/
  53. .clang-format
  54. .clang-tidy
  55. .eslintrc.js
  56. .git-blame-ignore-revs
  57. .gitattributes
  58. .gitignore
  59. .gn
  60. .mailmap
  61. .rustfmt.toml
  62. .vpython
  63. .vpython3
  64. .yapfignore
  65. AUTHORS
  66. BUILD.gn
  67. CODE_OF_CONDUCT.md
  68. codereview.settings
  69. DEPS
  70. DIR_METADATA
  71. ENG_REVIEW_OWNERS
  72. LICENSE
  73. LICENSE.chromium_os
  74. OWNERS
  75. PRESUBMIT.py
  76. PRESUBMIT_test.py
  77. PRESUBMIT_test_mocks.py
  78. README.md
  79. WATCHLISTS
README.md

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