Defer registerProtocolHandler registration work while prerendering.

This change modifies navigator.registerProtocolHandler and
navigator.unregisterProtocolHandler while prerendering. They will
continue to synchronously perform parameter validation, but they will
defer the work to register or unregister protocol handlers until after
the prerendered document is activated.

I've added WPT to test the synchronous parameter validation, the
deferred registration, and the deferred unregistration. In order for the
unregistration test to work in content shell I've added a Shell::UnregisterProtocolHandler implementation. It previously only had
a Shell::RegisterProtocolHandler.

Bug: 40288240
Change-Id: Ibff03d4acd50434f5753c99a5314fc10e2f3f375
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6322749
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Commit-Queue: Dave Risney <david.risney@microsoft.com>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Reviewed-by: Gyuyoung Kim <gyuyoung@igalia.com>
Reviewed-by: Domenic Denicola <domenic@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1434291}
10 files changed
tree: f11486293612bab59ba76ffb4917bcd2956c5e12
  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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