Disable CreateNewFolder/FileManagerBrowserTest because flaky.

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 0e9d776454dba7b75b9ef9d8c3e684f482494b38..711fc5d42564996ac55eaa4e8db5ace40588e51b 100644
--- a/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
+++ b/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
@@ -129,22 +129,15 @@ WRAPPED_INSTANTIATE_TEST_CASE_P(
                       TestParameter(NOT_IN_GUEST_MODE, "imageOpenDownloads"),
                       TestParameter(NOT_IN_GUEST_MODE, "imageOpenDrive")));
 
-#if defined(DISABLE_SLOW_FILESAPP_TESTS) || defined(OFFICIAL_BUILD)
-#define MAYBE_CreateNewFolder DISABLED_CreateNewFolder
-#else
-#define MAYBE_CreateNewFolder CreateNewFolder
-#endif
+// Flaky: crbug.com/715963
 WRAPPED_INSTANTIATE_TEST_CASE_P(
-    MAYBE_CreateNewFolder,
+    DISABLED_CreateNewFolder,
     FileManagerBrowserTest,
-    ::testing::Values(TestParameter(NOT_IN_GUEST_MODE,
-                                    "createNewFolderAfterSelectFile"),
-                      TestParameter(IN_GUEST_MODE,
-                                    "createNewFolderDownloads"),
-                      TestParameter(NOT_IN_GUEST_MODE,
-                                    "createNewFolderDownloads"),
-                      TestParameter(NOT_IN_GUEST_MODE,
-                                    "createNewFolderDrive")));
+    ::testing::Values(
+        TestParameter(NOT_IN_GUEST_MODE, "createNewFolderAfterSelectFile"),
+        TestParameter(IN_GUEST_MODE, "createNewFolderDownloads"),
+        TestParameter(NOT_IN_GUEST_MODE, "createNewFolderDownloads"),
+        TestParameter(NOT_IN_GUEST_MODE, "createNewFolderDrive")));
 
 // Fails on official build. http://crbug.com/429294
 #if defined(DISABLE_SLOW_FILESAPP_TESTS) || defined(OFFICIAL_BUILD)