Limit the number of `PermissionObserver` handles open by the Permissions API

This CL ensures that only at most one handle is open per (permission type, execution handle) pair.
It introduces a new class PermissionStatusListener that will hold the actual handle
and the PermissionStatus objects will hold a reference to this class.

This means that the PermissionType enum needs to be accessible in blink
and as such it's been moved from
`content/public/browser/permission_type.h`
to
`third_party/blink/public/common/permissions/permission_utils.h`

Additionally fix bugs uncovered along the way:
* If a PTZ (pan-tilt-zoom capable camera) request is made but it results
in a simple camera one, the Permissions API still tracks the PTZ
permission which would be incorrect.
* The New Tab Page doesn't properly get permission updates on the
PermissionStatus handle because of its weird URL. (`chrome://newtab`)

Fixed: 1122423
AX-Relnotes: n/a

Change-Id: Ieb5e9c7203f7bf3101a41af718a7d211b8bb40f3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3359620
Reviewed-by: Ravjit Uppal <ravjit@chromium.org>
Reviewed-by: Kamila Hasanbega <hkamila@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Andy Paicu <andypaicu@chromium.org>
Commit-Queue: Andy Paicu <andypaicu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#995106}

• components/permissions/permission_manager.cc[diff]
• components/permissions/permission_util.cc[diff]
• components/permissions/permission_util.h[diff]
• content/browser/permissions/permission_service_context.cc[diff]
• content/browser/permissions/permission_service_impl.cc[diff]
• content/browser/permissions/permission_service_impl.h[diff]
• content/public/browser/BUILD.gn[diff]
• content/public/browser/content_browser_client.h[diff]
• content/public/browser/devtools_permission_overrides.cc[diff]
• content/public/browser/permission_controller_delegate.h[diff]
• content/public/browser/permission_type.cc[Deleted - diff]
• content/public/browser/permission_type.h[diff]
• content/public/test/mock_permission_controller.h[diff]
• content/public/test/mock_permission_manager.h[diff]
• content/public/test/permission_type_unittest.cc[diff]
• content/public/test/permissions_test_utils.h[diff]
• content/web_test/browser/web_test_permission_manager.cc[diff]
• third_party/blink/common/BUILD.gn[diff]
• third_party/blink/common/permissions/permission_utils.cc[diff]
• third_party/blink/public/common/permissions/permission_utils.h[diff]
• third_party/blink/renderer/modules/permissions/BUILD.gn[diff]
• third_party/blink/renderer/modules/permissions/permission_status.cc[diff]
• third_party/blink/renderer/modules/permissions/permission_status.h[diff]
• third_party/blink/renderer/modules/permissions/permission_status_listener.cc[Added - diff]
• third_party/blink/renderer/modules/permissions/permission_status_listener.h[Added - diff]
• third_party/blink/renderer/modules/permissions/permissions.cc[diff]
• third_party/blink/renderer/modules/permissions/permissions.h[diff]
• weblayer/browser/permissions/permission_manager_factory.cc[diff]