https://bugs.webkit.org/show_bug.cgi?id=72866

Changes accessibilitySetShouldRepostNotifications from an instance method
into a class method so that it can be used for global notification listeners,
not just for listeners on a particular object.

Reviewed by Chris Fleizach.

Test: accessibility/notification-listeners.html

* accessibility/mac/WebAccessibilityObjectWrapper.h:
* accessibility/mac/WebAccessibilityObjectWrapper.mm:
(+[WebAccessibilityObjectWrapper accessibilitySetShouldRepostNotifications:]):
(-[WebAccessibilityObjectWrapper accessibilityPostedNotification:]):

Tools: Accessibility: AccessibilityController should support listening to notifications on all elements.
https://bugs.webkit.org/show_bug.cgi?id=72866

Adds addNotificationListener and removeNotificationListener methods
to AccessibilityController, to listen to notifications on any element
rather than a specific element. Mac (DRT and WKTR) and Chromium (DRT)
implementations are all contained in this change.

On Mac, refactors AccessibilityNotificationHandler into its own
source file that can be used by both AccessibilityController and
AccessibilityUIElement. (Both DRT and WKTR.)

Reviewed by Chris Fleizach.

* DumpRenderTree/AccessibilityController.cpp:
(addNotificationListenerCallback):
(removeNotificationListenerCallback):
(AccessibilityController::getJSClass):
* DumpRenderTree/AccessibilityController.h:
* DumpRenderTree/DumpRenderTree.xcodeproj/project.pbxproj:
* DumpRenderTree/chromium/AccessibilityController.cpp:
(AccessibilityController::AccessibilityController):
(AccessibilityController::notificationReceived):
(AccessibilityController::addNotificationListenerCallback):
(AccessibilityController::removeNotificationListenerCallback):
* DumpRenderTree/chromium/AccessibilityController.h:
* DumpRenderTree/gtk/AccessibilityControllerGtk.cpp:
(AccessibilityController::addNotificationListener):
(AccessibilityController::removeNotificationListener):
* DumpRenderTree/mac/AccessibilityControllerMac.mm:
(AccessibilityController::~AccessibilityController):
(AccessibilityController::addNotificationListener):
(AccessibilityController::removeNotificationListener):
* DumpRenderTree/mac/AccessibilityNotificationHandler.h: Added.
* DumpRenderTree/mac/AccessibilityNotificationHandler.mm: Added.
(-[NSString createJSStringRef]):
(-[AccessibilityNotificationHandler init]):
(-[AccessibilityNotificationHandler setPlatformElement:]):
(-[AccessibilityNotificationHandler dealloc]):
(-[AccessibilityNotificationHandler setCallback:]):
(-[AccessibilityNotificationHandler startObserving]):
(-[AccessibilityNotificationHandler _notificationReceived:]):
* DumpRenderTree/mac/AccessibilityUIElementMac.mm:
(AccessibilityUIElement::addNotificationListener):
* DumpRenderTree/win/AccessibilityControllerWin.cpp:
(notificationListenerProc):
(AccessibilityController::addNotificationListener):
(AccessibilityController::removeNotificationListener):
(AccessibilityController::winNotificationReceived):
(AccessibilityController::winAddNotificationListener):
* DumpRenderTree/win/AccessibilityUIElementWin.cpp:
(AccessibilityUIElement::addNotificationListener):
* WebKitTestRunner/InjectedBundle/AccessibilityController.cpp:
(WTR::AccessibilityController::addNotificationListener):
(WTR::AccessibilityController::removeNotificationListener):
* WebKitTestRunner/InjectedBundle/AccessibilityController.h:
(WTR::AccessibilityController::logAccessibilityEvents):
* WebKitTestRunner/InjectedBundle/AccessibilityTextMarker.cpp:
(WTR::AccessibilityTextMarker::AccessibilityTextMarker):
* WebKitTestRunner/InjectedBundle/AccessibilityTextMarkerRange.cpp:
(WTR::AccessibilityTextMarkerRange::AccessibilityTextMarkerRange):
* WebKitTestRunner/InjectedBundle/Bindings/AccessibilityController.idl:
* WebKitTestRunner/InjectedBundle/mac/AccessibilityControllerMac.mm: Added.
(WTR::AccessibilityController::addNotificationListener):
(WTR::AccessibilityController::removeNotificationListener):
* WebKitTestRunner/InjectedBundle/mac/AccessibilityNotificationHandler.h: Added.
* WebKitTestRunner/InjectedBundle/mac/AccessibilityNotificationHandler.mm: Added.
(-[NSString createJSStringRef]):
(-[AccessibilityNotificationHandler init]):
(-[AccessibilityNotificationHandler setPlatformElement:]):
(-[AccessibilityNotificationHandler dealloc]):
(-[AccessibilityNotificationHandler setCallback:]):
(-[AccessibilityNotificationHandler startObserving]):
(-[AccessibilityNotificationHandler _notificationReceived:]):
* WebKitTestRunner/InjectedBundle/mac/AccessibilityUIElementMac.mm:
(WTR::AccessibilityUIElement::AccessibilityUIElement):
(WTR::AccessibilityUIElement::verticalScrollbar):
(WTR::AccessibilityUIElement::addNotificationListener):
* WebKitTestRunner/WebKitTestRunner.xcodeproj/project.pbxproj:

LayoutTests: Accessibility: AccessibilityController should support listening to notifications on all elements.
https://bugs.webkit.org/show_bug.cgi?id=72866

Previously, the Mac implementation of AccessibilityUIElement.addNotificationListener
incorrectly triggered on notifications from all elements. Now it only triggers on
notifications from the correct element, and a new addNotificationListener method
in AccessibilityController can be used to trigger on notifications from all elements.

Updates 2 tests that depended on the old incorrect behavior.

Reviewed by Chris Fleizach.

* accessibility/notification-listeners.html: Added.
* platform/chromium/accessibility/notification-listeners-expected.txt: Added.
* platform/gtk/Skipped:
* platform/mac/accessibility/aria-expanded-notifications.html:
* platform/mac/accessibility/aria-listbox-selectedchildren-change.html:
* platform/mac/accessibility/notification-listeners-expected.txt: Added.
* platform/win/Skipped:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@102378 268f45cc-cd09-0410-ab3c-d52691b4dbfc