chromium/content/test/data/accessibility/aria/aria-keyshortcuts-expected-mac.txt

AXWebArea
++AXGroup
++++AXButton AXKeyShortcutsValue='Ctrl+X' AXTitle='Cut'
++++AXButton AXKeyShortcutsValue='Ctrl+C' AXTitle='Copy'
++++AXButton AXKeyShortcutsValue='Ctrl+V' AXTitle='Paste'