Ping watchdog thread during GpuChannel destruction

gpu/ipc/service/gpu_watchdog_thread.h

Index: gpu/ipc/service/gpu_watchdog_thread.h
diff --git a/gpu/ipc/service/gpu_watchdog_thread.h b/gpu/ipc/service/gpu_watchdog_thread.h
index 0489286dfe6e85194820b7e7d8efc7d0da6bbf2e..f841aef6b790c0fc19831b8a7003c3eb341d5b9d 100644
--- a/gpu/ipc/service/gpu_watchdog_thread.h
+++ b/gpu/ipc/service/gpu_watchdog_thread.h
@@ -14,6 +14,7 @@
 #include "base/threading/thread.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "gpu/command_buffer/service/progress_reporter.h"
 #include "gpu/gpu_export.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ -34,6 +35,7 @@ namespace gpu {
 class GPU_EXPORT GpuWatchdogThread
     : public base::Thread,
       public base::PowerObserver,
+      public gles2::ProgressReporter,
       public base::RefCountedThreadSafe<GpuWatchdogThread> {
  public:
   static scoped_refptr<GpuWatchdogThread> Create();
@@ -45,6 +47,9 @@ class GPU_EXPORT GpuWatchdogThread
   // any thread.
   void AddPowerObserver();
 
+  // gles2::ProgressReporter implementation:
+  void ReportProgress() override;
+
  protected:
   void Init() override;
   void CleanUp() override;