Fix flakiness in FileManager SuggestAppDialog test

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

Index: chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
diff --git a/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc b/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
index 825b2c888493d67f1f775c879fa19a7fc0317765..882f037b6be997c10703ec17827e3b867d6bd529 100644
--- a/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
+++ b/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
@@ -1040,10 +1040,14 @@ WRAPPED_INSTANTIATE_TEST_CASE_P(
                       TestParameter(NOT_IN_GUEST_MODE, "traverseDrive")));
 
 // Slow tests are disabled on debug build. http://crbug.com/327719
-// Disabled under MSAN, ASAN, and LSAN as well. http://crbug.com/479757.
-// Flakes often: http://crbug.com/479757
+// Disabled under MSAN as well. http://crbug.com/468980.
+#if !defined(NDEBUG) || defined(MEMORY_SANITIZER)
+#define MAYBE_SuggestAppDialog DISABLED_SuggestAppDialog
+#else
+#define MAYBE_SuggestAppDialog SuggestAppDialog
+#endif
 WRAPPED_INSTANTIATE_TEST_CASE_P(
-    DISABLED_SuggestAppDialog,
+    MAYBE_SuggestAppDialog,
     FileManagerBrowserTest,
     ::testing::Values(TestParameter(NOT_IN_GUEST_MODE, "suggestAppDialog")));