[directorytree] Disable directory tree context menu zip test in DEBUG

CL:1535465 did not really disable this test in DEBUG, it still runs on
CQ bots in DEBUG where it hits the bot time-out limit often.

Disabling a test in DEBUG is a little tricky: use !defined(NDEBUG) !!

Tbr: adanilo@
Bug: 944697, 936429
Change-Id: I5e6311e91d630d0ec999b624b282dcaf16ff5bfd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1724293Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682170}

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

@@ -609,8 +609,9 @@ WRAPPED_INSTANTIATE_TEST_SUITE_P(
         TestCase("dirCreateWithKeyboard").EnableMyFilesVolume(),
         TestCase("dirCreateWithoutChangingCurrent").EnableMyFilesVolume(),
         TestCase("dirCreateWithoutChangingCurrent"),
-#if !(defined(ADDRESS_SANITIZER) || defined(DEBUG))
-        // Zip tests times out too often on ASAN and DEBUG.
+#if !(defined(ADDRESS_SANITIZER) || !defined(NDEBUG))
+        // Zip tests times out too often on ASAN and DEBUG. crbug.com/936429
+        // and crbug.com/944697
         ZipCase("dirContextMenuZip"),
 #endif
         TestCase("dirContextMenuRecent"),