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

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

Index: chrome/test/data/webui/settings/languages_page_browsertest.js
diff --git a/chrome/test/data/webui/settings/languages_page_browsertest.js b/chrome/test/data/webui/settings/languages_page_browsertest.js
index 7cacf322542def38d5507d29329ab08904f3469f..8869a965fe05e78811c96ad370dc73497f3cda30 100644
--- a/chrome/test/data/webui/settings/languages_page_browsertest.js
+++ b/chrome/test/data/webui/settings/languages_page_browsertest.js
@@ -32,10 +32,10 @@
 };
 
 // Flaky on Windows. See https://crbug.com/641400.
-// May time out on debug builders 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(OS_WINDOWS) || !defined(NDEBUG)');
+// May time out on debug builders and 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(OS_WINDOWS) || defined(MEMORY_SANITIZER) || !defined(NDEBUG)');
 GEN('#define MAYBE_LanguagesPage DISABLED_LanguagesPage');
 GEN('#else');
 GEN('#define MAYBE_LanguagesPage LanguagesPage');