Identify the hung thread using the Wait Chain Traversal API

chrome/chrome_watcher/chrome_watcher_main.cc

 // Copyright (c) 2014 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 <windows.h>
 #include <sddl.h>
 
 #include <utility>
 
 #include "base/at_exit.h"
@@ skipping 206 matching lines @@
   // chrome.exe in order to report its exit status.
   ::SetProcessShutdownParameters(0x100, SHUTDOWN_NORETRY);
 
   base::Callback<void(const base::Process&)> on_hung_callback;
 
 #if BUILDFLAG(ENABLE_KASKO)
   bool launched_kasko = InitializeKaskoReporter(GetKaskoEndpoint(process.Pid()),
                                                 browser_data_directory);
 
 #if BUILDFLAG(ENABLE_KASKO_HANG_REPORTS)
-  // Only activate hang reports for the canary channel. For testing purposes,
-  // Chrome instances with no channels will also report hangs.
+  // Only activate hang reports for the canary channel.
   if (launched_kasko &&
-      (base::StringPiece16(channel_name) == L"" ||
-       base::StringPiece16(channel_name) == installer::kChromeChannelCanary)) {
+      base::StringPiece16(channel_name) == installer::kChromeChannelCanary) {
     on_hung_callback = base::Bind(&DumpHungProcess, main_thread_id,
                                   channel_name, L"hung-process");
   }
 #endif  // BUILDFLAG(ENABLE_KASKO_HANG_REPORTS)
 #endif  // BUILDFLAG(ENABLE_KASKO)
 
   // Run a UI message loop on the main thread.
   base::MessageLoop msg_loop(base::MessageLoop::TYPE_UI);
   msg_loop.set_thread_name("WatcherMainThread");
 
@@ skipping 22 matching lines @@
 
   // Wind logging down.
   logging::LogEventProvider::Uninitialize();
 
   return 0;
 }
 
 static_assert(
     std::is_same<decltype(&WatcherMain), ChromeWatcherMainFunction>::value,
     "WatcherMain() has wrong type");