[ozone/wayland] Implement PointerLock

In Wayland, it is not possible that the client controls the Pointer
(cursor) position. The existing cross-platform Chrome implementation
for "Mouse Lock" rely on this premise, which is not in place.

  WaylandWindow::MoveCursorTo(Point)

Wayland, then, provides two extensions supported by major Desktop
compositors (eg Gnome) and Exo, in order to fill the gap:
zwp_pointer_contraints and zwp_relative_pointer_manager.

This CL implements both, and provide the Pointer Lock functionality
to both Chrome/Wayland desktop and Lacros.

Here is flow with the current CL when a pointer lock is requested
by the HTML content:

   Renderer
      |
      | (mojo)
      |
   Browser
      |------> RenderWidgetHostViewEventHandler::LockMouse()
                              |
                              | (asks)
                              |
                 WindowTreeHost::SupportsMouseLock()
                          /               \
                         / yes             \ no
                        /                   \
          WTH::LockMouse()                   \
                  |                         (Current code path..)
                  |
  WaylandExtension::LockPointer(true)
                  |
                  |
  WaylandTopLevelWindow::LockPointer(true)
                  |
                  | enables
                  |
  ZwpPointerConstraints
                  +
                  ZwpRelativePointerManager

BUG=1208843
TEST=https://mdn.github.io/dom-examples/pointer-lock/

Change-Id: Ia9ee6b896b23f2ee8ba502c43fb09b16c515195a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2983858
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Maksim Sisov <msisov@igalia.com>
Cr-Commit-Position: refs/heads/master@{#898696}
13 files changed
tree: 20ede3d2fd6dc723b4c1f44daa5e865927ae84a4
  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. .vpython
  62. .vpython3
  63. .yapfignore
  64. AUTHORS
  65. BUILD.gn
  66. CODE_OF_CONDUCT.md
  67. codereview.settings
  68. DEPS
  69. DIR_METADATA
  70. ENG_REVIEW_OWNERS
  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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