[ios] Fix scroll position when using optimised session restoration

When using WKWebView's native session data, the scroll position is
saved. This causes the view to be incorrectly positioned when user
scroll the view, quit the app and reload it, if the native session
data is used and kSmoothScrollingDefault is enabled.

This was only visible with optimised session restoration since the
legacy session restoration had a regression causing it to fail to
load the native session data (thus hiding the regression from the
fullscreen code).

This CL change SessionRestorationServiceImpl to not load the native
session data if kSmoothScrollingDefault is enabled, behaving in the
same way as LegacySessionRestorationService (bug included).

    Fixing LegacySessionRestorationService to correctly load the
    native session would make this bug happen for all users. This
    is undesirable.

Bug: 337816888
Fixed: 336613927
Change-Id: Ifb3f448cf30dd6f2c8044dd4cfd707a2ffec590c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5490735
Reviewed-by: Aliona Dangla <alionadangla@chromium.org>
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1293694}
2 files changed
tree: b141bacbb2afcb58174ad12e385aa47cb25b68ac
  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. webkit/
  51. .clang-format
  52. .clang-tidy
  53. .clangd
  54. .eslintrc.js
  55. .git-blame-ignore-revs
  56. .gitallowed
  57. .gitattributes
  58. .gitignore
  59. .gitmodules
  60. .gn
  61. .mailmap
  62. .rustfmt.toml
  63. .vpython3
  64. .yapfignore
  65. ATL_OWNERS
  66. AUTHORS
  67. BUILD.gn
  68. CODE_OF_CONDUCT.md
  69. codereview.settings
  70. CPPLINT.cfg
  71. DEPS
  72. DIR_METADATA
  73. LICENSE
  74. LICENSE.chromium_os
  75. OWNERS
  76. PRESUBMIT.py
  77. PRESUBMIT_test.py
  78. PRESUBMIT_test_mocks.py
  79. README.md
  80. WATCHLISTS
README.md

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