Ping watchdog thread during GpuChannel destruction

gpu/command_buffer/service/shader_manager_unittest.cc

Index: gpu/command_buffer/service/shader_manager_unittest.cc
diff --git a/gpu/command_buffer/service/shader_manager_unittest.cc b/gpu/command_buffer/service/shader_manager_unittest.cc
index 1aef056902255d88f1b2915e5236bb83dcd0b7a3..b0398d61cf603c356df6ee59543053bcf0a90c3e 100644
--- a/gpu/command_buffer/service/shader_manager_unittest.cc
+++ b/gpu/command_buffer/service/shader_manager_unittest.cc
@@ -21,7 +21,7 @@ class ShaderManagerTest : public GpuServiceTest {
   ShaderManagerTest() {
   }
 
-  ~ShaderManagerTest() override { manager_.Destroy(false); }
+  ~ShaderManagerTest() override { manager_.Destroy(false, nullptr); }
 
  protected:
   ShaderManager manager_;
@@ -61,7 +61,7 @@ TEST_F(ShaderManagerTest, Destroy) {
   EXPECT_CALL(*gl_, DeleteShader(kService1Id))
       .Times(1)
       .RetiresOnSaturation();
-  manager_.Destroy(true);
+  manager_.Destroy(true, nullptr);
   // Check that resources got freed.
   shader1 = manager_.GetShader(kClient1Id);
   ASSERT_TRUE(shader1 == NULL);