Ping watchdog thread during GpuChannel destruction

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
index 7714f82ab9b4866ecbd10b7fd265d998f65e2c34..5e5dcfbb20c1d14595bbd795382e50ca0d4d80ec 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
@@ -193,11 +193,11 @@ void GLES2DecoderTestBase::InitDecoderWithCommandLine(
     feature_info = new FeatureInfo(*command_line, gpu_driver_bug_workaround);
   }
 
-  group_ = scoped_refptr<ContextGroup>(
-      new ContextGroup(gpu_preferences_, NULL, memory_tracker_,
-                       new ShaderTranslatorCache(gpu_preferences_),
-                       new FramebufferCompletenessCache, feature_info,
-                       normalized_init.bind_generates_resource, nullptr));
+  group_ = scoped_refptr<ContextGroup>(new ContextGroup(
+      gpu_preferences_, NULL, memory_tracker_,
+      new ShaderTranslatorCache(gpu_preferences_),
+      new FramebufferCompletenessCache, feature_info,
+      normalized_init.bind_generates_resource, nullptr, nullptr));
   bool use_default_textures = normalized_init.bind_generates_resource;
 
   InSequence sequence;