Re-enable ExecuteDefaultTaskOnDownloads/FileManagerBrowserTest all bots

Enabled in RELEASE, now re-enable this test in DEBUG/MSAN/ASAN.

Bug: 835626
Change-Id: I848da4a1571db55d1bbf4795eaa469ff564a55e2
Reviewed-on: https://chromium-review.googlesource.com/1049416Reviewed-by: Naoki Fukino <fukino@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556724}

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

@@ -305,14 +305,8 @@ WRAPPED_INSTANTIATE_TEST_CASE_P(
     FileManagerBrowserTest,
     ::testing::Values(TestParameter(NOT_IN_GUEST_MODE, "suggestAppDialog")));
 
-#if defined(DISABLE_SLOW_FILESAPP_TESTS)
-#define MAYBE_ExecuteDefaultTaskOnDownloads \
-  DISABLED_ExecuteDefaultTaskOnDownloads
-#else
-#define MAYBE_ExecuteDefaultTaskOnDownloads ExecuteDefaultTaskOnDownloads
-#endif
 WRAPPED_INSTANTIATE_TEST_CASE_P(
-    MAYBE_ExecuteDefaultTaskOnDownloads,
+    ExecuteDefaultTaskOnDownloads,
     FileManagerBrowserTest,
     ::testing::Values(
         TestParameter(NOT_IN_GUEST_MODE, "executeDefaultTaskOnDownloads"),