[Draft] See what tests are broken.

mojo/public/cpp/system/tests/watcher_unittest.cc

 // Copyright 2016 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.
 
 #include "mojo/public/cpp/system/watcher.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 143 matching lines @@
     // |b_watcher| should be cancelled when it goes out of scope.
   }
 
   // This should never trigger the watcher above.
   EXPECT_EQ(MOJO_RESULT_OK, WriteMessageRaw(a.get(), "hello", 5, nullptr, 0,
                                             MOJO_WRITE_MESSAGE_FLAG_NONE));
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, run_loop.QuitClosure());
   run_loop.Run();
 }
-
+/*
 TEST_F(WatcherTest, NotifyOnMessageLoopDestruction) {
   ScopedMessagePipeHandle a, b;
   CreateMessagePipe(nullptr, &a, &b);
 
   bool notified = false;
   Watcher b_watcher;
   EXPECT_EQ(MOJO_RESULT_OK,
             b_watcher.Start(b.get(), MOJO_HANDLE_SIGNAL_READABLE,
                             OnReady([&] (MojoResult result) {
                               EXPECT_EQ(MOJO_RESULT_ABORTED, result);
                               notified = true;
                             })));
   EXPECT_TRUE(b_watcher.IsWatching());
 
   message_loop_.reset();
 
   EXPECT_TRUE(notified);
 
   EXPECT_TRUE(b_watcher.IsWatching());
   b_watcher.Cancel();
 }
-
+*/
 TEST_F(WatcherTest, CloseAndCancel) {
   ScopedMessagePipeHandle a, b;
   CreateMessagePipe(nullptr, &a, &b);
 
   Watcher b_watcher;
   EXPECT_EQ(MOJO_RESULT_OK,
             b_watcher.Start(b.get(), MOJO_HANDLE_SIGNAL_READABLE,
                             OnReady([](MojoResult result) { FAIL(); })));
   EXPECT_TRUE(b_watcher.IsWatching());
 
   // This should trigger the watcher above...
   b.reset();
   // ...but the watcher is cancelled first.
   b_watcher.Cancel();
 
   EXPECT_FALSE(b_watcher.IsWatching());
 
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace
 }  // namespace mojo