Mac accessibility: Add support for AXDOMIdentifier

content/browser/accessibility/dump_accessibility_tree_browsertest.cc

Index: content/browser/accessibility/dump_accessibility_tree_browsertest.cc
diff --git a/content/browser/accessibility/dump_accessibility_tree_browsertest.cc b/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
index 9f6e50180cbf10803d2d41bf307318fe3899bf7f..04b1be98bc955258f83733470b392d9597e5c607 100644
--- a/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
+++ b/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
@@ -1183,6 +1183,10 @@ IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityInputWeek) {
   RunHtmlTest(FILE_PATH_LITERAL("input-week.html"));
 }
 
+IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityId) {
+  RunHtmlTest(FILE_PATH_LITERAL("id.html"));
+}
+
 IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityIns) {
   RunHtmlTest(FILE_PATH_LITERAL("ins.html"));
 }