Revert "[iOS][OR] Move suggestions grouping from mediator to controller"

This reverts commit 749e32fd8d9a0b935c67d819966473b662fddbac.

Reason for revert:
LUCI Bisection has identified this change as the cause of a test failure. See the analysis: https://ci.chromium.org/ui/p/chromium/bisection/test-analysis/b/4893563436400640

Sample build with failed test: https://ci.chromium.org/b/8723760508912670065
Affected test(s):
[ninja://ios/chrome/test:ios_chrome_unittests/OmniboxPopupMediatorTest.SelectManagePasswordSuggestionMetricLogged](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fios%2Fchrome%2Ftest:ios_chrome_unittests%2FOmniboxPopupMediatorTest.SelectManagePasswordSuggestionMetricLogged?q=VHash%3Ae6fcf249de8f1255)
[ninja://ios/chrome/test:ios_chrome_unittests/OmniboxPopupMediatorTest.SelectManagePasswordSuggestionMetricLogged](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2Fios%2Fchrome%2Ftest:ios_chrome_unittests%2FOmniboxPopupMediatorTest.SelectManagePasswordSuggestionMetricLogged?q=VHash%3Af313067e1c194d65)

If this is a false positive, please report it at http://b.corp.google.com/createIssue?component=1199205&description=Analysis%3A+https%3A%2F%2Fci.chromium.org%2Fui%2Fp%2Fchromium%2Fbisection%2Ftest-analysis%2Fb%2F4893563436400640&format=PLAIN&priority=P3&title=Wrongly+blamed+https%3A%2F%2Fchromium-review.googlesource.com%2Fc%2Fchromium%2Fsrc%2F%2B%2F6225805&type=BUG

Original change's description:
> [iOS][OR] Move suggestions grouping from mediator to controller
>
> This CL moves suggestions grouping from OmniboxPopupMediator to
> OmniboxAutocompleteController. This follows the effort of removing
> AutocompleteController interactions from the mediator.
>
> The popup mediator requests suggestions to the OmniboxPopupController
> who fetches them through the OmniboxAutocompleteController. Future CLs
> will move the suggestions wrapping from the mediator to the popup
> controller.
>
> Unit tests are simplified with the use of these CLs:
> - https://chromium-review.googlesource.com/c/chromium/src/+/6221316
> - https://chromium-review.googlesource.com/c/chromium/src/+/6218940
>
> Fixed: 394319253
> Change-Id: Iea297e8b16f2bed1d074e0379731968cff79f354
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6225805
> Auto-Submit: Christian Xu <christianxu@chromium.org>
> Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
> Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1416133}
>

Change-Id: I8c1fe021197853cb22f750edf58a6453453cf6f1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6236740
Commit-Queue: Yoshisato Yanagisawa <yyanagisawa@chromium.org>
Reviewed-by: Yoshisato Yanagisawa <yyanagisawa@chromium.org>
Owners-Override: Yoshisato Yanagisawa <yyanagisawa@google.com>
Owners-Override: Allen Bauer <kylixrd@google.com>
Cr-Commit-Position: refs/heads/main@{#1416508}
13 files changed
tree: 90872cbd98a68a7fc794ae54fa7a5a2d94caa80d
  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. crypto/
  16. dbus/
  17. device/
  18. docs/
  19. extensions/
  20. fuchsia_web/
  21. gin/
  22. google_apis/
  23. gpu/
  24. headless/
  25. infra/
  26. ios/
  27. ipc/
  28. media/
  29. mojo/
  30. native_client_sdk/
  31. net/
  32. pdf/
  33. ppapi/
  34. printing/
  35. remoting/
  36. rlz/
  37. sandbox/
  38. services/
  39. skia/
  40. sql/
  41. storage/
  42. styleguide/
  43. testing/
  44. third_party/
  45. tools/
  46. ui/
  47. url/
  48. webkit/
  49. .clang-format
  50. .clang-tidy
  51. .clangd
  52. .git-blame-ignore-revs
  53. .gitallowed
  54. .gitattributes
  55. .gitignore
  56. .gitmodules
  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. CPPLINT.cfg
  68. CRYPTO_OWNERS
  69. DEPS
  70. DIR_METADATA
  71. LICENSE
  72. LICENSE.chromium_os
  73. OWNERS
  74. PRESUBMIT.py
  75. PRESUBMIT_test.py
  76. PRESUBMIT_test_mocks.py
  77. README.md
  78. WATCHLISTS
README.md

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