gpu: Replace more chrome ipc with mojom API.

services/ui/gpu/gpu_service.h

Index: services/ui/gpu/gpu_service.h
diff --git a/services/ui/gpu/gpu_service.h b/services/ui/gpu/gpu_service.h
index 0e0355de7b4db9cdd4ed4fac90468ede1534391a..88dd9aa98f9988dd7c7214df5f9ff92c40f18a0a 100644
--- a/services/ui/gpu/gpu_service.h
+++ b/services/ui/gpu/gpu_service.h
@@ -130,6 +130,10 @@ class GpuService : public gpu::GpuChannelManagerDelegate,
       int32_t surface_id,
       const DestroyingVideoSurfaceCallback& callback) override;
   void WakeUpGpu() override;
+  void DestroyAllChannels() override;
+  void Crash() override;
+  void Hang() override;
+  void ThrowJavaException() override;
 
   scoped_refptr<base::SingleThreadTaskRunner> io_runner_;