Disable HistorySupervisedUserTest on Mac

Bug: 1028129
Tbr: dpapad@chromium.org
Change-Id: I19337a65e4cb12d91d87f9decd2626788b6026cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1933590Reviewed-by: Owen Min <zmin@chromium.org>
Commit-Queue: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#718689}

chrome/test/data/webui/history/history_browsertest.js

@@ -210,7 +210,13 @@ HistorySupervisedUserTest.prototype = {
   ]),
 };
 
-TEST_F('HistorySupervisedUserTest', 'All', function() {
+GEN('#if !defined(OS_MACOSX)');
+GEN('#define MAYBE_AllTest DISABLED_AllTest');
+GEN('#else');
+GEN('#define MAYBE_AllTest AllTest');
+GEN('#endif');
+
+TEST_F('HistorySupervisedUserTest', 'MAYBE_AllTest', function() {
   mocha.run();
 });