[MemSheriff] Disable two tests which are flaky by design.

third_party/mojo/src/mojo/edk/system/simple_dispatcher_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // NOTE(vtl): Some of these tests are inherently flaky (e.g., if run on a
 // heavily-loaded system). Sorry. |test::EpsilonTimeout()| may be increased to
 // increase tolerance and reduce observed flakiness (though doing so reduces the
 // meaningfulness of the test).
 
 #include "mojo/edk/system/simple_dispatcher.h"
@@ skipping 307 matching lines @@
             d->AddAwakable(&w, MOJO_HANDLE_SIGNAL_WRITABLE, 4, nullptr));
   EXPECT_EQ(MOJO_RESULT_OK, d->Close());
   stopwatch.Start();
   EXPECT_EQ(MOJO_RESULT_CANCELLED,
             w.Wait(2 * test::EpsilonTimeout().InMicroseconds(), &context));
   EXPECT_LT(stopwatch.Elapsed(), test::EpsilonTimeout());
   EXPECT_EQ(4u, context);
   // Don't need to remove waiters from closed dispatchers.
 }
 
-#if defined(OS_WIN)
 // http://crbug.com/396393
-#define MAYBE_BasicThreaded DISABLED_BasicThreaded
-#else
-#define MAYBE_BasicThreaded BasicThreaded
-#endif
-TEST(SimpleDispatcherTest, MAYBE_BasicThreaded) {
+TEST(SimpleDispatcherTest, DISABLED_BasicThreaded) {
   test::Stopwatch stopwatch;
   bool did_wait;
   MojoResult result;
   uint32_t context;
   HandleSignalsState hss;
 
   // Wait for readable (already readable).
   {
     scoped_refptr<MockSimpleDispatcher> d(new MockSimpleDispatcher());
     {
@@ skipping 255 matching lines @@
     // Since we closed before joining, we can't say much about what each thread
     // saw as the state.
   }
 }
 
 // TODO(vtl): Stress test?
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo