Ping watchdog thread during GpuChannel destruction

gpu/command_buffer/service/memory_program_cache_unittest.cc

Index: gpu/command_buffer/service/memory_program_cache_unittest.cc
diff --git a/gpu/command_buffer/service/memory_program_cache_unittest.cc b/gpu/command_buffer/service/memory_program_cache_unittest.cc
index a4a78c6299078af5dd2595aaa5fc8fb84dce4e07..a91a98bf74c2c2ae87dd3f290ed035d6160aa3c6 100644
--- a/gpu/command_buffer/service/memory_program_cache_unittest.cc
+++ b/gpu/command_buffer/service/memory_program_cache_unittest.cc
@@ -13,6 +13,7 @@
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/command_buffer/service/gpu_service_test.h"
+#include "gpu/command_buffer/service/progress_reporter_stub.h"
 #include "gpu/command_buffer/service/shader_manager.h"
 #include "gpu/command_buffer/service/shader_translator.h"
 #include "gpu/command_buffer/service/test_helper.h"
@@ -77,10 +78,10 @@ class MemoryProgramCacheTest : public GpuServiceTest {
 
   MemoryProgramCacheTest()
       : cache_(new MemoryProgramCache(kCacheSizeBytes, kDisableGpuDiskCache)),
+        shader_manager_(&progress_reporter_),
         vertex_shader_(NULL),
         fragment_shader_(NULL),
-        shader_cache_count_(0) {
-  }
+        shader_cache_count_(0) {}
   ~MemoryProgramCacheTest() override { shader_manager_.Destroy(false); }
 
   void ShaderCacheCb(const std::string& key, const std::string& shader) {
@@ -191,6 +192,7 @@ class MemoryProgramCacheTest : public GpuServiceTest {
   int32_t shader_cache_count_;
   std::string shader_cache_shader_;
   std::vector<std::string> varyings_;
+  ProgressReporterStub progress_reporter_;
 };
 
 TEST_F(MemoryProgramCacheTest, CacheSave) {