Ping watchdog thread during GpuChannel destruction

gpu/command_buffer/tests/gl_manager.h

Index: gpu/command_buffer/tests/gl_manager.h
diff --git a/gpu/command_buffer/tests/gl_manager.h b/gpu/command_buffer/tests/gl_manager.h
index aa8a49acb0812f2316c17e770b2d937fdfa29b33..ea6471c09455a128d5f0e0c53de39d8b05cb9fac 100644
--- a/gpu/command_buffer/tests/gl_manager.h
+++ b/gpu/command_buffer/tests/gl_manager.h
@@ -16,6 +16,7 @@
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/feature_info.h"
 #include "gpu/command_buffer/service/gpu_preferences.h"
+#include "gpu/command_buffer/service/progress_reporter_stub.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
@@ -181,6 +182,7 @@ class GLManager : private GpuControl {
   bool context_lost_allowed_;
   bool pause_commands_;
   uint32_t paused_order_num_;
+  gles2::ProgressReporterStub progress_reporter_;
 
   const CommandBufferId command_buffer_id_;
   uint64_t next_fence_sync_release_;