Ping watchdog thread during GpuChannel destruction

gpu/command_buffer/service/context_group_unittest.cc

Index: gpu/command_buffer/service/context_group_unittest.cc
diff --git a/gpu/command_buffer/service/context_group_unittest.cc b/gpu/command_buffer/service/context_group_unittest.cc
index 4bf94cca8b0650e7203965102faf3281fd28929b..3014bc404db38b931cc8d3fdf077be1d89d1b4b2 100644
--- a/gpu/command_buffer/service/context_group_unittest.cc
+++ b/gpu/command_buffer/service/context_group_unittest.cc
@@ -11,6 +11,7 @@
 #include "gpu/command_buffer/service/gles2_cmd_decoder_mock.h"
 #include "gpu/command_buffer/service/gpu_service_test.h"
 #include "gpu/command_buffer/service/mailbox_manager.h"
+#include "gpu/command_buffer/service/progress_reporter.h"
 #include "gpu/command_buffer/service/test_helper.h"
 #include "gpu/command_buffer/service/texture_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -44,7 +45,7 @@ class ContextGroupTest : public GpuServiceTest {
     scoped_refptr<FeatureInfo> feature_info = new FeatureInfo;
     group_ = scoped_refptr<ContextGroup>(
         new ContextGroup(gpu_preferences_, NULL, NULL, NULL, NULL, feature_info,
-                         kBindGeneratesResource, nullptr));
+                         kBindGeneratesResource, nullptr, nullptr));
   }
 
   GpuPreferences gpu_preferences_;