Re-enable FileDisplay/FileManagerBrowserTest all bots

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

Bug: 836254
Change-Id: I810feee6bd00d881289e12bf9dc328f070a7b125
Reviewed-on: https://chromium-review.googlesource.com/1046727Reviewed-by: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
Reviewed-by: Stuart Langley <slangley@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556407}

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

@@ -86,14 +86,8 @@ IN_PROC_BROWSER_TEST_P(FileManagerBrowserTestWithLegacyEventDispatch, Test) {
 #define WRAPPED_INSTANTIATE_TEST_CASE_P(prefix, test_case_name, generator) \
   INSTANTIATE_TEST_CASE_P(prefix, test_case_name, generator)
 
-// Fails on official build. http://crbug.com/429294
-#if defined(DISABLE_SLOW_FILESAPP_TESTS) || defined(OFFICIAL_BUILD)
-#define MAYBE_FileDisplay DISABLED_FileDisplay
-#else
-#define MAYBE_FileDisplay FileDisplay
-#endif
 WRAPPED_INSTANTIATE_TEST_CASE_P(
-    MAYBE_FileDisplay,
+    FileDisplay,
     FileManagerBrowserTest,
     ::testing::Values(TestParameter(NOT_IN_GUEST_MODE, "fileDisplayDownloads"),
                       TestParameter(IN_GUEST_MODE, "fileDisplayDownloads"),