Use mus::MojoGpuMemoryBufferManager in mus::GpuService.

components/mus/public/cpp/lib/gpu_service.h

Index: components/mus/public/cpp/lib/gpu_service.h
diff --git a/components/mus/public/cpp/lib/gpu_service.h b/components/mus/public/cpp/lib/gpu_service.h
index 571a3537c14dd1c9be8b8ab2effff36afb8d5ae1..553e215067cb4eaf1cd4430ec3d636bac6e1e3ed 100644
--- a/components/mus/public/cpp/lib/gpu_service.h
+++ b/components/mus/public/cpp/lib/gpu_service.h
@@ -19,7 +19,7 @@ class Connector;
 
 namespace mus {
 
-class GpuMemoryBufferManagerMus;
+class MojoGpuMemoryBufferManager;
 
 class GpuService : public gpu::GpuChannelHostFactory {
  public:
@@ -44,7 +44,7 @@ class GpuService : public gpu::GpuChannelHostFactory {
   base::MessageLoop* main_message_loop_;
   base::WaitableEvent shutdown_event_;
   base::Thread io_thread_;
-  std::unique_ptr<GpuMemoryBufferManagerMus> gpu_memory_buffer_manager_;
+  std::unique_ptr<MojoGpuMemoryBufferManager> gpu_memory_buffer_manager_;
   scoped_refptr<gpu::GpuChannelHost> gpu_channel_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuService);