Disable DumpAccessibilityTreeTest.AccessibilityModalDialogInIframeClosed

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 af077e5ff28290dbbafcb581a3520d655870454d..63e21b28bfa86e472aa2afcbbb2dfc6950afbf2e 100644
--- a/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
+++ b/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
@@ -1405,8 +1405,9 @@ IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest,
   RunHtmlTest(FILE_PATH_LITERAL("modal-dialog-opened.html"));
 }
 
+// http://crbug.com/738497
 IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest,
-                       AccessibilityModalDialogInIframeClosed) {
+                       DISABLED_AccessibilityModalDialogInIframeClosed) {
   RunHtmlTest(FILE_PATH_LITERAL("modal-dialog-in-iframe-closed.html"));
 }