gpu: play skp files through the command buffer

gpu/command_buffer/service/in_process_command_buffer.cc

Index: gpu/command_buffer/service/in_process_command_buffer.cc
diff --git a/gpu/command_buffer/service/in_process_command_buffer.cc b/gpu/command_buffer/service/in_process_command_buffer.cc
index 692fb8e38a8ca88b43c31eb43f53c9779e5a793e..24628f5b12d784e9b81508c6c2c603b09087cb79 100644
--- a/gpu/command_buffer/service/in_process_command_buffer.cc
+++ b/gpu/command_buffer/service/in_process_command_buffer.cc
@@ -221,6 +221,21 @@ gfx::GpuMemoryBufferHandle ShareGpuMemoryBufferToGpuThread(
   }
 }
 
+scoped_refptr<InProcessCommandBuffer::Service> GetInitialService(
+    const scoped_refptr<InProcessCommandBuffer::Service>& service) {
+  if (service)
+    return service;
+
+  // Call base::ThreadTaskRunnerHandle::IsSet() to ensure that it is
+  // instantiated before we create the GPU thread, otherwise shutdown order will
+  // delete the ThreadTaskRunnerHandle before the GPU thread's message loop,
+  // and when the message loop is shutdown, it will recreate
+  // ThreadTaskRunnerHandle, which will re-add a new task to the, AtExitManager,
+  // which causes a deadlock because it's already locked.
+  base::ThreadTaskRunnerHandle::IsSet();
+  return g_default_service.Get().gpu_thread;
+}
+
 }  // anonyous namespace
 
 InProcessCommandBuffer::Service::Service() {}
@@ -271,7 +286,7 @@ InProcessCommandBuffer::InProcessCommandBuffer(
       last_put_offset_(-1),
       gpu_memory_buffer_manager_(nullptr),
       flush_event_(false, false),
-      service_(service.get() ? service : g_default_service.Get().gpu_thread),
+      service_(GetInitialService(service)),
       gpu_thread_weak_ptr_factory_(this) {
   DCHECK(service_.get());
   next_image_id_.GetNext();