Speculatively re-enable WebRTC test.

The MSan bug does not appear to reproduce anymore.

Bug: 405951
Change-Id: I57c643a638381ae66ca5b8d871c57bdda861166d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1657753
Auto-Submit: David Benjamin <davidben@chromium.org>
Reviewed-by: Tommi <tommi@chromium.org>
Commit-Queue: Tommi <tommi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710096}

content/browser/webrtc/webrtc_data_browsertest.cc

@@ -58,14 +58,7 @@ IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcDataBrowserTest, CallWithDataOnly) {
   MakeTypicalPeerConnectionCall("callWithDataOnly();");
 }
 
-#if defined(MEMORY_SANITIZER)
-// Fails under MemorySanitizer: http://crbug.com/405951
-#define MAYBE_CallWithSctpDataOnly DISABLED_CallWithSctpDataOnly
-#else
-#define MAYBE_CallWithSctpDataOnly CallWithSctpDataOnly
-#endif
-IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcDataBrowserTest,
-                       MAYBE_CallWithSctpDataOnly) {
+IN_PROC_BROWSER_TEST_F(MAYBE_WebRtcDataBrowserTest, CallWithSctpDataOnly) {
   MakeTypicalPeerConnectionCall("callWithSctpDataOnly();");
 }