Revert of WebUI: Disable all JS tests in MSAN, ASAN, and TSAN bots.

chrome/test/data/webui/settings/settings_ui_browsertest.js

Index: chrome/test/data/webui/settings/settings_ui_browsertest.js
diff --git a/chrome/test/data/webui/settings/settings_ui_browsertest.js b/chrome/test/data/webui/settings/settings_ui_browsertest.js
index ce10ed32df46e7ad422b7793fbc67ee619d7a7c8..849b4ac4b8855c5b55dab2b43490201fa4c13ff1 100644
--- a/chrome/test/data/webui/settings/settings_ui_browsertest.js
+++ b/chrome/test/data/webui/settings/settings_ui_browsertest.js
@@ -16,10 +16,10 @@
   __proto__: SettingsPageBrowserTest.prototype,
 };
 
-// Times out on debug builders the Settings page can take several seconds to
-// load in a Release build and several times that in a Debug build. See
-// https://crbug.com/558434.
-GEN('#if !defined(NDEBUG)');
+// Times out on debug builders and may time out on memory bots because
+// the Settings page can take several seconds to load in a Release build
+// and several times that in a Debug build. See https://crbug.com/558434.
+GEN('#if defined(MEMORY_SANITIZER) || !defined(NDEBUG)');
 GEN('#define MAYBE_All DISABLED_All');
 GEN('#else');
 GEN('#define MAYBE_All All');