Verify if GPU message pump is signaled when it hangs in WaitForWork

content/gpu/gpu_watchdog_thread.cc

 // Copyright (c) 2012 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 "content/gpu/gpu_watchdog_thread.h"
 
 #include <errno.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 328 matching lines @@
 
   base::debug::Alias(&interrupt_delay);
   base::debug::Alias(&current_cpu_time);
   base::debug::Alias(&time_since_arm);
 
   bool using_thread_ticks = base::ThreadTicks::IsSupported();
   base::debug::Alias(&using_thread_ticks);
 
   bool using_high_res_timer = base::Time::IsHighResolutionTimerInUse();
   base::debug::Alias(&using_high_res_timer);
+
+  bool message_pump_is_signaled =
+      watched_message_loop_->MessagePumpWasSignaled();
+  base::debug::Alias(&message_pump_is_signaled);
 #endif
 
   base::Time current_time = base::Time::Now();
   base::TimeTicks current_timeticks = base::TimeTicks::Now();
   base::debug::Alias(&current_time);
   base::debug::Alias(&current_timeticks);
 
   LOG(ERROR) << "The GPU process hung. Terminating after "
              << timeout_.InMilliseconds() << " ms.";
 
@@ skipping 101 matching lines @@
     int tty_number;
     size_t num_res = sscanf(tty_string, "tty%d\n", &tty_number);
     if (num_res == 1)
       return tty_number;
   }
   return -1;
 }
 #endif
 
 }  // namespace content