Implement computedRole and computedName (behind a flag)

LayoutTests/accessibility/computed-name-expected.txt

Index: LayoutTests/accessibility/computed-name-expected.txt
diff --git a/LayoutTests/accessibility/computed-name-expected.txt b/LayoutTests/accessibility/computed-name-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..961e02b2d0dc19512aebf9402471a7b431a2e9bc
--- /dev/null
+++ b/LayoutTests/accessibility/computed-name-expected.txt
@@ -0,0 +1,220 @@
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS name is "alert name"
+PASS name is "alertdialog name"
+PASS name is "application name"
+PASS name is "article name"
+PASS implicitRoleElement.computedName is "implicit article name"
+PASS name is "banner name"
+PASS implicitRoleElement.computedName is "implicit banner name"
+PASS name is "button name"
+PASS implicitRoleElement.computedName is "implicit button name"
+PASS implicitRoleElement.computedName is "implicit button name"
+PASS implicitRoleElement.computedName is "implicit button name"
+PASS name is "button name"
+PASS implicitRoleElement.computedName is "implicit complementary name"
+PASS name is "complementary name"
+PASS name is "checkbox name"
+PASS implicitRoleElement.computedName is "implicit checkbox name"
+PASS name is "checkbox name"
+PASS name is "dialog name"
+PASS name is "directory name"
+PASS name is "grid name"
+PASS name is "row name"
+PASS name is "columnheader name"
+PASS name is "row name"
+PASS name is "gridcell name"
+PASS name is "combobox name"
+PASS name is "definition name"
+PASS name is "document name"
+PASS implicitRoleElement.computedName is "implicit document name"
+PASS name is "form name"
+PASS name is "group name"
+PASS implicitRoleElement.computedName is "implicit group name"
+PASS implicitRoleElement.computedName is "implicit group name"
+PASS name is "heading name"
+PASS implicitRoleElement.computedName is "implicit heading name"
+PASS implicitRoleElement.computedName is "implicit heading name"
+PASS implicitRoleElement.computedName is "implicit heading name"
+PASS implicitRoleElement.computedName is "implicit heading name"
+PASS implicitRoleElement.computedName is "implicit heading name"
+PASS implicitRoleElement.computedName is "implicit heading name"
+PASS name is "heading name"
+PASS name is "img name"
+PASS implicitRoleElement.computedName is "implicit img name"
+PASS name is "link name"
+PASS implicitRoleElement.computedName is "implicit link name"
+PASS implicitRoleElement.computedName is "implicit link name"
+PASS name is "link name"
+PASS name is "list name"
+PASS implicitRoleElement.computedName is "implicit list name"
+PASS implicitRoleElement.computedName is "implicit list name"
+PASS name is "listbox name"
+PASS implicitRoleElement.computedName is "implicit listbox name"
+PASS name is "log name"
+PASS name is "main name"
+PASS implicitRoleElement.computedName is "implicit main name"
+PASS name is "marquee name"
+PASS name is "math name"
+PASS name is "menu name"
+PASS name is "menubar name"
+PASS name is "menuitem name"
+PASS name is "menuitem name"
+PASS name is "menuitemcheckbox name"
+PASS name is "menuitemcheckbox name"
+PASS name is "menuitemradio name"
+PASS name is "menuitemradio name"
+PASS name is "navigation name"
+PASS implicitRoleElement.computedName is "implicit navigation name"
+PASS name is "note name"
+PASS name is "option name"
+PASS name is "option name"
+PASS name is "progressbar name"
+PASS implicitRoleElement.computedName is "implicit progressbar name"
+PASS name is "radio name"
+PASS implicitRoleElement.computedName is "implicit radio name"
+PASS name is "radio name"
+PASS name is "radiogroup name"
+PASS name is "region name"
+PASS implicitRoleElement.computedName is "implicit region name"
+PASS name is "scrollbar name"
+PASS name is "search name"
+PASS name is "separator name"
+PASS implicitRoleElement.computedName is "implicit separator name"
+PASS name is "slider name"
+PASS name is "spinbutton name"
+PASS name is "status name"
+PASS implicitRoleElement.computedName is "implicit status name"
+PASS name is "tablist name"
+PASS name is "tab name"
+PASS name is "tab name"
+PASS name is "tabpanel name"
+PASS name is "textbox name"
+PASS implicitRoleElement.computedName is "implicit textbox name"
+PASS implicitRoleElement.computedName is "implicit textbox name"
+PASS implicitRoleElement.computedName is "implicit textbox name"
+PASS implicitRoleElement.computedName is "implicit textbox name"
+PASS implicitRoleElement.computedName is "implicit textbox name"
+PASS implicitRoleElement.computedName is "implicit textbox name"
+PASS name is "timer name"
+PASS name is "toolbar name"
+PASS implicitRoleElement.computedName is "implicit toolbar name"
+PASS name is "tooltip name"
+PASS name is "tree name"
+PASS name is "treegrid name"
+PASS name is "treeitem name"
+PASS input.computedName is "Title0"
+PASS input.computedName is "Label1"
+PASS input.computedName is "AriaLabel2"
+PASS input.computedName is "LabelledBy3"
+PASS input.computedName is "Placeholder4"
+PASS input.computedName is "Title5"
+PASS input.computedName is "LabelledBy6"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+This is an alert
+This is an alertdialog
+This is an application
+This is an article
+This is an article
+This is a banner
+This is a banner
+button name
+This is a button
+  implicit button name  This is a button
+complementary name
+This is a complementary
+implicit complementary name
+This is a complementary
+
+checkbox name
+implicit checkbox name  
+directory name
+This is a directory
+This is a columnheader
+This is a gridcell
+This is a combobox
+
+This is a definition
+This is a document
+This is a form
+This is a group
+This is a summary
+heading name
+This is a heading
+implicit heading name
+
+implicit heading name
+
+implicit heading name
+
+implicit heading name
+
+implicit heading name
+
+implicit heading name
+
+This is an img
+
+link name
+This is a link
+implicit link name
+This is a list
+implicit listitem name
+implicit listitem name
+This is a listbox
+
+This is a log
+This is main
+This is main
+This is a marquee
+This is math
+This is a menu
+This is a menubar
+menuitem name
+This is a menuitem
+menuitemcheckbox name
+This is a menuitemcheckbox
+menuitemradio name
+This is a menuitemradio
+This is a navigation
+This is a navigation
+This is a note
+option name
+This is an option
+
+This is a progressbar
+
+radio name
+This is a radiobutton
+implicit radio name  
+This is a radiogroup
+This is a region
+This is a region
+This is a scrollbar
+This is a search
+This is a separator
+This is a slider
+implicit slider name  
+This is a spinbutton
+implicit spinbutton name  
+This is a status
+
+tab name
+This is a tab
+This is a tabpanel
+text name
+This is a textbox
+         
+This is a timer
+This is a toolbar
+This is a tooltip
+tooltip name
+This is a tree
+This is a treegrid
+treeitem name
+This is a treeitem
+           
+Label1 Label2 Label3 Label6 LabelledBy3 LabelledBy6 DescribedBy6