Fix live regions on Mac OS X.

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 72e21c6021a6089ffc77b1f5f33d4d9604b8282c..f31c7508a9413cda364186a052152397c65725c6 100644
--- a/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
+++ b/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
@@ -472,6 +472,11 @@ IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityAriaLive) {
   RunTest(FILE_PATH_LITERAL("aria-live.html"));
 }
 
+IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest,
+                       AccessibilityAriaLiveWithContent) {
+  RunTest(FILE_PATH_LITERAL("aria-live-with-content.html"));
+}
+
 IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityAriaLog) {
   RunTest(FILE_PATH_LITERAL("aria-log.html"));
 }